Modern & Stylish Design: Emergency alert system for seniors adopts a modern minimalist design. The receiver with a low power consumption design to save power energy. Transmitter has a built-in battery and is easy to replace Easy to Install or Uninstall: The transmitter can be taped to a place where you can notice it. Receiver in Nurse Call System will Ring and Flash when press Call Button .1 SOS Caregiver Call button is a good idea for patients, elderly, residents, Handicapped, Sick. No need to Yell to Get Someone’s Attention Waterproof & Easy to Pair: The Transmitter/Push Panic Button is IP55 Waterproof and Dustproof. Alert button for seniors is acceptable for Meal/Soup Splash. Each wireless receiver can work with 50pcs call buttons and pair easily. The Features of Pager/Chime Unit: The pager chime unit has 55 ringtones, Volume From 0db to 110db,5 Level Adjustable, Operating range is within 1000 feet in an open area. 100% Guarantee: Our wireless caregiver pager smart call system is approved by FCC, CE, and RoHS; we provide customer service on our products and we will always do our best to support you. Besides, we will offer 365 days warranty and 24 hours customers service. Any problems about, pls contact with our customer service team to get a full refund or replacement