Product Description Elevate your caregiving with our 📞 Caregiver Pager Call Button! 🏠 With a 500ft range and hassle-free wireless installation, you can place this life-saving device anywhere. 😇 Keep your 👵 elderly loved ones and patients safe and sound. When you're busy or relaxing, the emergency button alerts you. If you're in healthcare, our nurse call button ensures instant contact. 🔔 Enjoy 38 unique ringtones, adjustable volume (from silent to 110db), and LED number displays, making it easy to identify the caller's location. 🎶 This system's impressive 500ft range covers multi-story homes and is easily expandable with additional buttons or receivers. 🌐 Plus, our top-notch after-sales service ensures you have the best shopping and user experience! 🌟💼👨‍⚕️🏡 CallTou Caregiver Pager Panic Button Bed Alarms and Fall Prevention for Elderly/Patient/Disabled/Child How to pair more transmitters and select music? Step1 Press the “forward”/”backward” button on the receiver to choose your favorite melody. Step2 Press and hold down the volume button,until it makes a “Ding” sound and the receiver indicator flashes. Step3 Press the call button quickly,it will make a “Ding-Ding” sound and the receiver indicator flashes. Step4 Press the call button again to confirm if the current ringtone is the one you set, if it is, the pairing is complete. Caregiver Call Button Features of Plug-in Receiver Default Ringtone: Ding-dong sound Working Voltage: 110-260V Operating Range: 500Ft/150m Package includes: Plug-in Receiver & Wireless call button Double-sided tape include User Manual Technical Details Manufacturer CallTou Item Weight ‎7 ounces/14.7 ounce Package Dimensions ‎4.41 x 3.66 x 3.5 inches/5.51 x 5.12 x 3.35 inches Batteries ‎AAA batteries required.(included) Item Package Quantity ‎1 Batteries Included? ‎Yes Batteries Required? ‎Yes

Product Description More Than Just Door Alarms: Our system offers more than just basic door alarms. By installing sensors on doors or windows, you can monitor the safety of children who are just starting to explore their independence or protect Alzheimer's patients from unsafe door openings. With Tuya App compatibility, you'll receive alerts on your phone and through the receiver simultaneously, providing double layers of protection for your home. Works with Tuya: Seamlessly connect your Smart WiFi Wireless Caregiver Pager Door Alarms to the Tuya App via a 2.4 GHz Wi-Fi network (please note that it's not compatible with 5 GHz). Once connected, you can control the chime remotely from your smartphone. Share access with your family so they can also monitor the alarms, no matter where they are, even if they're in a different city. Adjustable Alarm Volume: Our wireless door alarm receiver offers an adjustable alarm volume ranging from 0 to 110dB, with 5 distinct levels, including a mute option. You can select from 38 different chime sounds to suit your preferences. Additionally, the flashing indicator light ensures that the alarms are easily noticeable, making them suitable for individuals with hearing impairments. Easy Installation & Extended Range: Setting up your Smart WiFi Wireless Caregiver Pager Door Alarms is a breeze. The sensors and receiver come pre-paired, simply plug the transmitter into a standard outlet, choose your preferred chime, and you're ready to go. With a remarkable 500 ft working range, this system covers most homes. The sensors boast long-lasting battery life, minimizing the need for frequent replacements.       Share the door magnet information to other family members through Tuya APP, no matter where the family members are, they will receive the message alert immediately at the same time, which can take better care of the elderly and small children. Product information Product Dimensions 1.9 x 1.5 x 1.9 inches Item Weight 6.2 ounces（2 Sensors 1 Receiver） 8.1 ounces（3 Sensors 1 Receiver） Manufacturer CallTou Country of Origin China Item model number TY02-DS16 Batteries 3 12V batteries required. (included)

Product Description CallTou WiFi water alarm for leak detection and low water level detection provide you with more peace of mind. Even if you are not at home, you will receive alert notifications pushed by TUYA app so that you can take prompt action. Please Note: This Water Sensor only supports 2.4G WiFi, NOT 5G. CallTou Water Sensor WiFi Water Leak Sensor or Water Level Sensor? CallTou water sensor can be used as Water Leak Sensor or Water Level Sensor, you can select its working mode by flipping the switch on back. -As water leak detector, it can be used to monitor kitchen drain leaks, sump pump alarm, bathroom leaks, laundry leaks and more. -As water level sensor alarm: When the water level is below the monitoring level and the probe cannot reach the water, the water level detector will sound an alarm immediately. The probe is not easily oxidized. More Features about This WiFi Smart Water Leak Sensor Real-time water sensor alarm Once the probe of the water sensor sensing water, it will immediately occur alarm sound, and send alarm notification to your mobile phone. Easy to Set up There is no fixed grade, just adjust at will! The volume level is 0-100dB, adjustable alarm sound duration is 0-180s, minimum delay alarm time is 3s. Low Battery Reminder When the battery of the water leak sensor is too low, the TUYA APP will push a reminder of low battery. Please replace the battery in time. Timing Detection Function Meet your needs for timing monitoring. CallTou Water Sensor Monitor Water Leakages or Low Water Level on Your Phone! When a leak occurs, the sensors will not only sound a loud alarm(100dB alarm sound will penetrate the whole house), but TUYA App notifications will also be sent to your phone. Alerts pushed by the TUYA APP are free of charge. Give different names to different sensors in the App, you can clearly know where the leakage happened and deal with it in time. Set the function of sharing information in the APP, your family can also receive alert notifications of water leaks.   Q&A Does this Water Sensor supports 5G WiFi connectivity? No. This WiFi water sensor only supports 2.4G WiFi.   Can I turn off the alarm sound from the phone APP? Yes. The alarm sound will be turned off when you tap the "disarm" button in the TUYA App. But you need to deal with the water leaks, or the alarm on your phone will alert you, unless you turn off the ringer on your cell phone.   Water Sensor Alarm does not emit alarm sound, only receive water leakage alarm notification on the phone, is this OK? Yes. You can set the water sensor alarm sound to 0dB, the phone can still receive an alarm notification from the TUYA APP.   Will the water sensor get waterlogged and break down? Use the probe to detect water leakage or water level. Put the main part of water sensor in the right place, so you don't have to worry about the alarm getting into the water and breaking down.   Are water leak detectors necessary? Whether it's frozen pipes, water heater that bursts, or leaky washing machine, there are lots of reasons to protect your home against water damage. Water leak detector can identify leaks and send alerts to your phone, even when you're away from home. Technical Details Manufacturer Calltou Product Dimensions ‎2PCS:3.73 x 2.16 x 9.04 cm; 150 Grams 1PCS:3.7L x 2.2W x 9.0H cm; 80 Grams Batteries ‎4 AAA batteries required. (included) Item model number ‎2PCS Water Detector Included Components ‎Case Batteries Included? ‎Yes Batteries Required? ‎Yes Battery Cell Type ‎Alkaline Battery Description ‎battery_type_aaa Warranty Description ‎No Warning Applicable Item Weight ‎150 g Country of origin ‎China Number of batteries ‎4 AAA batteries required. (included) Control method ‎App

Pay attention！！！ Each set is individually paired and ready to use. If you need to add more call buttons, it is also possible. But you need to re-pair, the specific pairing video can refer to this ：         PAGER WATCH NO MONTHLY FEE For Both Caregiver and Patient/Elderly/Resident/Handicapped/Sick Freedom while Still calling for Help at home. Not need to Yell to Get Someone’s Attention. SMART CAREGIVER PAGER: Vibration or Audible Prompt for choice. Wake Up the night shift caregiver Only Transmitter/Push Call Button is Waterproof.  Both Pager/receiver and Call button are powered by Built-in battery. Pager battery are Rechargeable. Standby time about 3 days. DC 12V 23A Call button battery. Standby time about 1 years Tag：Alarm Watch with Vibrate/Wrist Paging System/Pager Watch User Manual Fast Delivery：We prioritize shipping from local warehouses in your country/region (such as the United States, Canada, etc.), and you will receive the package soon.

  Pay attention！！！ The watch can display call information from up to 4 buttons simultaneously on one screen. After more than 4 times, the oldest call information will move down and can be scrolled by using the up and down keys. The working distance is about 500Ft (in the open air), if you need a larger range and need to use it with a signal boosterSignal enhancement device product link:https://www.calltou.com/collections/calltou-accessories-1/products/calltou-sw05-sw06-watch-repeater-white-signal-booster Product Description Have you ever been in a situation that customers wanna make an order in the restaurant but cannot find the waiter or waitress? This wireless attendant or server call paging system can solve your problem. The wireless paging system is widely used in the service area. It includes the buttons for guests to use and the signal receiver for waiters to use. When the guest is in need, he or she just presses the button near him or her, his or her desk number will be displayed with music or vibration. Call Buttons Keep caretaker from being tied to a few rooms in the house and provided them with the confidence that could be available quickly; The push call button is waterproof, more suitable for patients whose hands flabby; The caregiver was able to work around the house and garage, but still be available at a moment's notice when be called. Lanyard hole design, by the lanyard, patients can wear the button around the neck Waterproof Buttons Compact size Lanyard hole design Wireless Waiter Server Paging Calling System The calling system host is easy to operate. If someone presses the call button, it will display through the display screen. With the real voice report, it can attract more attention from staff and service personal, offering better service efficiency and quality. What can this pager system bring? Get food out of the kitchen faster with the server pagers Give customers a better experience Reduce the cost of labor Saves lots of time and makes your business more efficient Can match up to 999 pager Long Range Signal Distance Portable watch receiver and small call buttons Large LCD screen   Display Receiver 1. Voltage: 12V 2. Current: ≤1A 3. Capacity: Multiple up to 255pcs wireless call button 4. Working Temperature: -20℃~80℃ 5. Receiving Sensitivity:≥-105dBm 6. Frequency: 433Mhz Wrist Watch Receiver Function 1. Add button, up to 999 buttons. 2. button definition, you can define a different name for each button, 24 letters combined with 0-9 numbers. 3. Set the Alarm Clock, you can set the alarm and remind you when necessary. 4. Set the date and time. 5. Set the reminder mode: Ring&Vibration, Ring, Vibration, Mute. 6. Screen power-saving mode. 7. Set the timer to turn off the power of the watch. Specification of Call Button 1.Button battery: 23A 12V Alkaline battery(included) 2.Button Waterproof Level: IPX5 3.Button Size: Diameter 2.4 inch, thickness 0.7 inch 4.Button with built-in antenna   For Hotel For Restaurant For Clinic   Package included 1x LCD Display Screen Receiver 1x Wrist Watch Receiver 10x Call Buttons 10x String Necklace 1x Instruction Tips 1. one call button could call two receivers at the same time 2. the paging system just one-way, for example, the customer press the button, then the waitress will go to know what's they need 3. you even can use wireless call system play games at the party(like jeopardy), exciting your Imagination fully 4. If the wireless signal range is decreased, please replace the battery of the call button 5. Call Button Just Some Simple Waterproof Function so Can Not Be Placed in The Water 6. Wrist Receiver is not waterproof. Product information Package Dimensions 10.5 x 7.6 x 4 inches Item Weight 3.09 pounds Manufacturer CallToU Batteries 10 12V batteries required. (included)

Product Description 【Portable Caregiver Pager】CallTou pager focused on home care for the elderly, the watch call button and receiver are portable and can be wearing by the caregiver and carer all times, replacing unnecessary shouting and screaming when you love need help,provide more convenient and better life for your family.【Double alert function】The Battery receivers have 3 alert functions:music (include 5 levels of volume adjustment,0db~110db); vibrate and vibrate and music function, ensure you don't miss the help from your loved one, and you can adjust the function according to your different needs.【Long Range】Operating Range is 500 Feet in Open Area.Each Wireless Portable Receiver Can Work with 50pcs Call Buttons,Each Transmitter Can Pair with 50pcs Receiver and be Set to Different or Same Music.【Easy to Use】The watch button for elderly is easy to used.When assistance is needed, a simple press of watch pager sends an alert directly to the caregiver’s pager receiver.And the watch can be charged by USB, but is not waterproof,please take it off before bathing or showering.【Widely Application Range】The call button sysyem stay more independent and choose,suitable for elderly,seniors, patients, disabled,widely used in private households,hospitals, nursing homes, and many other places. User Manual     How to Operation Package Dimensions 3.74 x 3.62 x 3.62 inches Item Weight 5.9 ounces

About this item 【Two-way Intercom】Fully automatic two-way intercom, automatic recognition of voice signals during communication process without any operation. 【Design and use place】Unique design .Suitable for any place where conversation is difficult. For banks, hospitals, stations, securities and other windows is the best choice. 【Clear voice】Using advanced language processing chip to make the voice clear, with powerful anti-interference and anti-howling function. 【Host and extension】Both the main unit and the extension have speaker and microphone, and the volume can be adjusted separately. 【Recording and Long Working】There is a recording jack, which can be connected to a recording device.Able to work continuously in a long time clearly.Realize two-way recording conversion. Product Description The window two-way intercom speaker system is suitable for any place where window conversation is difficult or noisy. It adopts advanced language processing chip plus unique design and strict quality management. It has the characteristics of clear sound quality, controllable volume, anti-interference and anti-howling.Ideal for the bank, hospital, securities, bus station etc. where guard glass again theft is installed.It is easy to install and has a long working time.   Clear and Natural Voice The wind intercom uses advanced language processing chip to make the voice clear and natural, with powerful anti-interference and anti-howling function.   Anti-interference Microphone As long as you speak close to the microphone,even through the glass,the voice can be clearly heard from the speaker of the other party.Even in a noisy environment, customers can still hear the sound clearly. Features Display Unique Design It has unique appearance and adopts convex speaker.The knob has a metallic luster, elegant and generous.Adjustable volume with separate knob. 360°Bendable Microphone Tube Streamline design.The microphone is sturdy and durable.Super long durable stainless steel hose microphone tube can be bent arbitrarily without dead angle and can talk at any angles. High-quality Anti-shock Film Use high-quality diaphragm to make communication clear.Strong sound penetration,delicate and clear,bring high-fidelity sound quality,make your service more quality. Recording Function Built-in recording signal output, can provide master station and sub station audio output for recording. Technical Parameter Working Voltage：DC12V Max.Working Current:：200mA Output Power：2W+3W Microphone Sensitivity：45dB±2dB No Distortion Frequency：10Hz-15KHz Packing List 2 x Master Station 2 x Extension 2 x Power Adapter 2 x 3M Double Sided Tape 2 x User Manual 8 x Locating Pieces Technical Details Brand ‎CallToU Part Number ‎WI08 Hardware interface ‎USB Number of Items ‎2 Power source type ‎Corded Electric Batteries Required ‎No Material Type ‎Plastic Does it contain liquid? ‎No Includes rechargable battery ‎No Manufacturer reference ‎WI08 Parcel Dimensions ‎21.3 x 15.2 x 10.9 cm; 1.01 Kilograms

Product Description 2 Receivers and 3 Caregiver Call Button, the Idea is for Both Caregiver and Patient/Elderly/Resident/Handicapped/Sick Freedom while Still calling for Help at home. Not need to Yell to Get Someone’s Attention. Durable adult monitors for elderly. The portable receiver is rechargeable,magnet on the back,bring it with you everywhere by keeping it in pocket/bag.You can cook in the kitchen, water the flowers in the yard,take the express at the door. No noise . When Caregiver receive the help signal , just press the OFF button on the receiver , the alarm will stop,not affect others. Panic Button for Elderly is Waterproof. Acceptable for Meal/Soup Splash. And Allow to be Installed in the Washing Room.It requires a 23A 12V Alkaline battery which are already included and not rechargeable Transmitter/Push Call Button is Easy Carry. It can Be Put in Pocket. Or Hang on neck as Pendant. Neck Strap included. Fixed in Bedside/Washing Room. The Fixed Bracket and Double sticker are included  User Manual CallToU Wireless Caregiver Pager Call Button System Are you still worried about how to take better care of your family? CallToU USB Senior Caregiver Pager will solve the problem for you！ Waterproof Splashing Durable Caregiver Pager No Noise - “OFF” Button Magnetic Attraction   Lightweight and Portable   How to pair more transmitters and select music? Step 1 Press the "music"button on the receiver to choose your favorte melody. Step 2 Press and hold down the "volume" and "music" button ,until it makes a "Ding Ding" sound and the receiver indicator flashes. Step 3 Press the call button quickly it will makes a Ding-Ding" sound and the receiver indicator fashes. Step 4 Press the call button again to confirm if the current ringtone is the one you set, if it is, the pairing is complete. Use Flexibility   600 ft Portable Rechargeable Caregiver Pager   CallToU Wireless Caregiver Pager Call Button   Portable Caregiver Pager Plug-in &Battery Receiver LED Number Pager Almighty Caregiver Pager Wifi Caregiver pager Plug-in Receivers Almighty Caregiver Pager Range 600 ft 500 ft 500 ft 500 ft 2.4GHz Wi-Fi service range 550 ft 500 ft/70ft(SOS Watch) Button Type Neck Wearable Neck Wearable Neck Wearable/Belt Clip Neck Wearable/Wrist Wearable Neck Wearable Neck Wearable Neck Wearable/Wrist Wearable Rcceiver Tape USB Charged Plug in & Battery Plug in USB Charged&Plug in Plug in Plug in Plug in Water Resistance IP55 Waterproof IP55 Waterproof IP55 Waterproof IP55 Waterproof IP55 Waterproof Showerproof Showerproof Ringtone/Volume Levels 5 Ringtines/5 Volume Levels 55 Ringtines/5 Volume Levels 38 Ringtines/5 Volume Levels 5 Ringtines/4 Volume Levels 38 Ringtines/5 Volume Levels   Fast Delivery：We prioritize shipping from local warehouses in your country/region (such as the United States, Canada, etc.), and you will receive the package soon. Product information Package Dimensions 4.61 x 3.27 x 3.11 inches Item Weight 12.3 ounces Manufacturer CallToU ASIN B08GFMM64B Country of Origin China Batteries 3 12V batteries required. (included) Is Discontinued By Manufacturer No   Pay attention！！！Each set is individually paired and ready to use. If you need to add more call buttons, it is also possible, but you need to re-pair, the specific pairing video can refer to this ：

Product Description The door chimes when door opens for home and for business has 1000FT reliable long working range. Perfect entry alert chime when door opens for home and business. What about insecure front door, child safety gate, upstairs window, cabinet, basement door [ Easy to Install] This waterproof wireless door sensor chime are paired already, all you need to do is attach the transmitter on your door or window. The receiver is portable battery powered. LED indicators are suitable for the elderly who are hearing impaired [4 Remind Mode ] Door entry chime's receiver is with 4 remind modes, includes deaf doorbell flashing light has: 1,ringing + vibration 2,ringing + flashing light 3,ringing + vibration + flashing light 4,flashing light four modes to choose, flashing light silent mode, do not worry about the ringing will disturb the sleeping baby. LED light flashing, ringing vibration, you will never miss any visitors, in different scenes can choose different modes [ Smart Door Chimes] The receiver of door open chimes is equipped with 20 kinds of ringtones for your choices. 5 levels adjustable volume, from silent to noisy(0 db to110 db), and door sensor chime are wireless long-range operating up to 1000 feet(no blocking), you don't have to worry about not hearing the sound [After-sales Service ] The entry alert chime is can be a gift for relatives and friends to used to remind visitors, family anti-theft,etc. It has a 1-year warranty and please just feel free to contact us User Manual Long Working Range 1000FT Long Working Range 1000FT and 5 Volume level How to replace the battery？ Step 1: Use a small screw to align the hole below the door magnet and pry it open Step 2: Open the back cover and take out the battery for replacement 4 Remind Mode As a Christmas Gift Technical Details Manufacturer ‎CallToU Item Weight ‎8.1 ounces Package Dimensions ‎3.78 x 3.46 x 2.91 inches Batteries ‎2 AAA batteries required. (included) Batteries Included? ‎Yes Batteries Required? ‎No

This dog door bell has a unique anti-jamming technology with signal stability over an extra-long distance of 500 feet and no wifi or other costs, ideal for dog doggie doggy cat and pet [ Easy to Use ] This dog bell for door potty training allows dogs to call by easily touching or sliding over the button without pressing it, which makes it easy for dogs of any size to use [ Smart Ringtones ] The receiver of dog doorbell has 55 ringing tones to choose from and 4 level adjustable volume from 0db to 110db, you could choose the melodies and mode you need and silent mode does not affect rest. Easy use by plug the receiver into an electrical outlet and there will be a flashing LED light [ High Quality ] Both touch button and receiver of this dog bell are waterproof and dustproof. Whether you put it indoors or outdoors, you don't have to worry about the dog doorbell getting wet [ Don't Hesite to Order ] The sophisticated packaging helps you keep the dog door bell secure without worrying about losing it. If you have any questions, you can check the included user manual, and 24 hours customer services and professional technology team are standing by Active Dog Doorbell, Active Life Why do we need a dog doorbell ? Dog doorbell will be an awesome communication tool to understand the needs of dogs. All you need is to install them wherever you need them, so that the call button is closer to the dog and it is convenient for the dog to use with his paw or nose. Fun for the dogs and lifesaver from a mess. Why should we train dogs with good habits ? Avoid scratching, barking, whining and to train dogs to break the habits of jumping up and clawing the door. No strings, no wires and no more scratch marks on the door. Easy to use and help the dog develop a good habit of paying attention to hygiene. Dog Door Bell Easy to Use Ultra Long Distance Super Capacity Battery No Wiring Required Strong Penetration Waterproof Button LED Flashing Light 4 Level Adjustable Volume   Convenient Settings 55 Ringing tones to choose from and 4 level adjustable volume from 0db to 110db, you could choose the melodies and mode you need Waterproof & Dustproof Whether you put it indoors or outdoors, you don't have to worry about the dog doorbell getting wet or dirty Long Operating Distance Signal stability over an long distance of 500+ feet and no wifi or other costs. In an open area with no obstacles, the operating range can reach 1000 feet Product details Package Dimensions ‏ : ‎ 5.2 x 3.98 x 3.9 inches; 11.68 Ounces Batteries ‏ : ‎ 2 12V batteries required. (included) Date First Available ‏ : ‎ December 2, 2021 Manufacturer ‏ : ‎ CallToU

TY01 1-2

  Multifunctional Battery Doorbell: This wireless portable doorbell is very versatile, you can use it as an ordinary doorbell for home, classroom, office, business; you can also use it as a call bell for the elderly, children, patients, disabled, pregnant women and other family members who need help. Portable & Indoor & Outdoor: This portable doorbell is powered by 3 AAA batteries, it can still work properly for you when the power is off or there is no power source; you can carry it around with you, whether you are upstairs, downstairs, basement, garage, garden, yard, within 500ft range, it can work properly. Install in Minutes: Unlike traditional wired doorbells, this wireless doorbell is very easy to install, the receiver only needs to install 3 batteries, doorbell buttons using the included double-sided adhesive can quickly complete the installation, even a child can successfully install it. Ringtone Customization & Memory Function: This battery doorbell chime has 5 volume levels, from mute to 120DB, with 55 ring tones to choose from, you can change the default ring tone,and you can set different ring tones for different buttons, easy for you to distinguish faster; after a sudden power failure to re-power, it can retain the previously set ring tone, no need to reset the ring tone. Product Description   Expandable with Additional Transmitters/Receivers Expand your CallToU battery powered doorbell system in seconds with up to multiple transmitters and multiple receivers, built-in pairing method. If you’ve purchased one doorbell kit, you can reorder the same doorbell and matching them together to meet your specific needs. Wireless Range: 1000ft maximum in the open air Internal Sounds: 55 Chimes Volume: 5 level adjustable levels (0db to 110db) Receiver Power: AC 110V ~ 220V 50Hz / 60Hz Transmitter Power: 1 x 12V 23A battery Note: The battery-operated doorbell kits only pair with our battery-operated doorbell kits, and they do not match other kits or accessories in our store.     Wireless Doorbell Battery Powered Driven by 3 AAA batteries (included), the receiver doesn't occupy a power socket and can be installed in seconds. It saves you from the trouble caused by power outages and remembers your settings even when replacing batteries Long Operating Distance 1000 ft ultral long wireless range, will not interfere with other equipment in your home or those of your neighbors, ensures you will never miss a visitor, even if you are a few rooms away or on another floor Durable waterproof buttons This button has IP44 waterproof for outdoor use. The working temperature is between -4℃ and 140℃. It can work normally even in the harshest weather conditions. 3-Year Battery Life The built-in 12V 23A lithium battery has an ultra long three-year lifespan, saving you the annoyance of frequent purchases and replacements.   55 kinds of music to choose from The doorbell boasts an ample selection of 55 melodies and a wide volume range of 0-120 dB, Various pop chimes and traditional "ding dong" sounds, You can choose any ringtone you like Mute Mode The silent volume level doesn’t disturb a sleeping baby and the maximum level of 120 dB is hearable by the hearing-impaired or even during a party. Thanks to the visual LED alert, a disturbance-free notification is provided. Memory Function Memory function, it remembers your previous melody and volume level even after a power outage. This thoughtful feature ensures that your original settings are not deleted Portable Doorbell The doorbell can be carried anywhere in your home, ensuring you never miss a visitor   How to Change Ringtone/ Pair More Buttons: Step 1 Press the "forward"/"backward" button on the receiver to select the melody you like. Step 2 Press and hold down the volume button on the receiver until it makes a "Ding" sound and the receiver indicator flashes. Step 3 Press the waterproof button quickly, it will makes a "Ding-Ding" sound and the receiver indicator flashes. Step 4 Press the button again to confirm whether the receiver can sound, if yes, the pairing is completed.   Operation Video Show Technical Details Item Weight ‎8 ounces Package Dimensions ‎3.75 x 3.25 x 2.75 inches Size ‎2 Button+1 Battery Receiver Batteries Included? ‎Yes Batteries Required? ‎No Battery Cell Type ‎Alkaline