This is smoke alarm, there is a storage box for smoke inside, when the smoke volume more than the box capacity, it will alarm.PRODUCT DETAILS:Power Source9V/DCStatic Current<10μAAlarm Current<12mALow Voltage Alarm6V-7VLow Battery Alert7-15DaysCurrent<25mAAlarm V0lume>85DB(3m)Work ......
| Power Source | 9V/DC |
| Static Current | <10μA |
| Alarm Current | <12mA |
| Low Voltage Alarm | 6V-7V |
| Low Battery Alert | 7-15Days |
| Current | <25mA |
| Alarm V0lume | >85DB(3m) |
| Work Temperature | -10ºC~+50ºC |


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