Practical &amp; Reliable Ideal as an alarm for those who need help quickly, such as the elderly, children, disabled people, pregnant women or sick people, simply press the call button to receive caring care, timely and without shouting. It can also be used as a doorbell. Long Range Up to 180 meters range in open area (walls and other objects will reduce range), and using 16-bit encoding to eliminate interference from other devices allows it to operate virtually anywhere in your home. More alert options Choice of 45 sounds (36 melody sounds and 9 alarm sounds ) and three alert modes (Sound + Light, Sound only, Light only). Sound volume adjustable in 3 levels, max. 110db ideal for the elderly. No power switch is designed to avoid forgetting to turn on, as it might miss an important emergency call (if not in use for a long time, remove the batteries to preserve its life life). Convenient placementtransmitter The waterproof transmitter can be worn as a pendant or at the bedside. The receiver can be wall-mounted, placed freely on the desk, or carried in the caregiver's pocket. Low battery indication 1, No operation, but the device indication light continues flashes or produces abnormal sound, please replace the battery; 2, The pairing between transmitter and receiver may lose contact after replacing the battery, the items are not defective, just pair them manually to repair them. Receiver powered by 3 AAA batteries (not included); transmitter powered by 1 x button cell battery (included). Pregnant women Easily call for quick help with the wireless pager set. No need to shout, thoughtful care for pregnant women. Great and practical gift. Elderly people or patients or disabled people Adjustable sound volume in 3 levels, max 110db, ideal for elderly people. < p>No power switch is designed to avoid forgetting to turn on may miss an important emergency call. Especially good for weak or patient or disabled elderly people. Children To train children's independence, the Child can easily call for help if he needs it without shouting. Put the receiver with children while parents have the transmitter, easily call children to get up in the morning. Sold by grid cool store