SPECIFICATION
Power source:Doorbell emitter :12V/DC
Receiver :4.5V/AC(three 2#battery)
Smoke alarm emitter:9V/DC
Out connected:6~10VCD
Distance:≥30m(wide place)
Sound level:75db(high)
Sound tyoe:"dingdong"----doorbell emitter
"alarm whistle'------smoke alarm emitter
Low voltage alrm of smoke alarm:6.5V~7.6V
THE CERTIFICATE OF PRODUCT:
THE IMAGE OF MANUFACTORY AND WORKSHOP:
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