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220V power outage Call alarm High voltage grid power outage warning nursing home hospital power outage alarm

 
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brand:
OKD
Model:
1
Origin:
Chinese mainland
Color classification:
220v power failure 360 degree sound and light alarm 220v incoming call + blackout 360 degree sound and light alarm 220v power off + incoming black speaker lithium battery direct wiring 220v power outage 360 degree sound and light alarm 380v three-phase power failure phase absence alarm. Black horn
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