wireless alarm system

home alarm system include: Call button (Wireless Transmitter) and Signal Receiver The home alarm system consist of a call button and the alarm flashing (signal receiver). When an elderly ordisabled in panic or emergencysituation, heor she can press the button near him or her, (The button could be worn on neck orfixed on the bedhead or stick on table), then thealarm flashing will work with soundto attrackattendant's attention. This system could be used in many kinds of field. Such as home, parking lot, school, hospital and so on...