Description This mini size caller are designed 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. 80 meters super long distance transmission, let you use it more conviently and freely. Features - Color: As shown. - Material: ABS+Aluminum. - Size: 8.1 x 8.1 x 4.5 cm. - Working distance: 80 meters - Working frequency: 433MHZ - Power supply voltage: Receiver: 90-250V transmitter: 3V 2032 battery. - Made of material, durable and easy to use. - Make the emergency situation really soundable, large sound design make people pay more attention, to make you get help more faster. - Also it can be use as an simple doorbell. - Battery powered, more easy to use. - Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Wireless Portable Receiver & Push Button Expandable- Each transmitter can be paired with 30 receivers.It is especially Room to Room Monitoring for Seniors.Whenever and wherever elderly people need help, they can get it immediately and accurately at the touch of a button.The Caregiver Pager is an Excellent Elderly Assistance Product Smart Alarm- The Plug in caregiver pager has features 52 tunes and 5 adjustable volume levels ranging from 0 to 110 dB. It will remember your settings even if power outage. It can remember the last melody and volume after power off without resetting to the previous settings. Waterproof & Durable- Ultra-low power consumption and CR2032 lithium battery gives a lifespan of up to 3 years; no need to worry about frequent battery replacement; IP55 waterproof rating to withstand the harshest weather (-4 °F to 140 °F). Acceptable for Meal/Soup Splash. And Allow to be Installed in the Washing Room Easy to Install - Simply plug the receiver into a power outlet and the battery receiver is portable, Bring call button with you everywhere by keeping it in pocket/bag or hang on neck as pendant. This medical alert systems boasts a remote connection of up to 150M/500 feet and does not interfere with other equipment in your home