QH-827

WIRELESS BATTERY OPENRATED DOORBELL

· Easy to install, wire free
· PCB assembled by SMT machine
· Pre-set digital code builds unique connection between receiver and button,
　 block interference from outside signal
· Up to 100 meters range, but walls metal frames and electrical interference
　 will reduce the operating distance
· Different version available,15,17,25,36 tunes
· Different painting available

Model No.	QH-827
Frequency	315MHz±0.5MHz 433MHz±0.5MHz
Active pressure wave(receiver)	≤-57dbm
Negative pressure wave(button)	≤-36dbm
Power supply(receiver)	2*1.5V AA
Power supply(button)	1*12V 23A Alkaline battery
Quiescent current	≤400μA
Transmit power	＜10mW
Operating range	UP to 100 meters(OPEN AREA)
Sound options	15,17,25,36 tunes