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HOME » QUESTION » What are the battery parameters of the siren and how long can it operate during a power outage?And light intensity?

Q：What are the battery parameters of the siren and how long can it operate during a power outage?And light intensity?

A：

It can last 4 hours then warning for 5 minutes during a power outage.

The Maximum light intensity is about 21 Lux(intensity changes while alarm).