Alarm wireless patient and elderly person alarm Convenient and reliable: It is very suitable for the elderly, children, disabled, pregnant women or patients who need quick help, because the caregiver's nannies cannot be with the sick or disabled all the time, just press the phone button, you can come on time and considerate without shouting take care. It can also be used as a doorbell. Long range: Up to 400 meters in an open area (objects such as walls shorten the distance), with 16-bit coding to eliminate interference from other devices, giving it the performance you need to work almost anywhere in your home. Easy to place: The waterproof transmitter is equipped with a strap, which can be worn as a pendant or placed on the head of the bed. The receiver can be hung on the wall with a string, placed on a table or carried in the caregiver's pocket. Package contents: 1 x lens transmitterand1 x host