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widely used for room, hall, kitchen, party, no smoking place, hotel, factory...etc.
alarm mode: while smoke density reach the limited, it gives off alarm warning as well as
sending wireless signal to alarm panel, high sensitivity, interconnect up to alarm. unique
“battery missing” lockout. customized.
specification:
1.battery operated: dc 9v.
2.rechargeable li-ion battery 10 year 9 dc battery.
3.photoelectric sensor.
4.red led indicate alarm. green led mains 。。。
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