Ideal as an alarm for those who need quickly help, like the elderly, child, handicapped, pregnant women or the sick.The nanny of caregiver can not always stay with patients or the disabled, just simply press the call button to get timely and considerate care without yelling.It can also be used as doorbell.Up to 80 meters range in open area (walls and other objects will reduce the range).Using 16-bit encoding to eliminate interference from other devices.No power switch is designed to avoid forgetting.Transmitter is designed with Lanyard, and can hang on neck or put into pocket. The device also has a handy wristband so that it can be conveniently attached to the wrist. Receiver Powered by AC Receiver powered by AC 90~250V Main, no worries about low battery.
