Voice and light Alarm 433 MHZ, product name:voice and lighting alarm signalmodel:REH340 main features:Wireless,Open design, automatic extension of ... and all kinds of detector (16), the emergency acousto-optic alarm, stores, shops, is the ideal choice! Garage etc.Host ... alone can make wireless sound-light alarm bell and use. Technical parameter:1.Electric voltage: DC 12V2 ...