DHI-HY-SA21A-W2(868)
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Wireless Smoke Alarm (868MHz)
> Operating Voltage: DC 3V
> Battery Life: 3 years
> Communication: 868 MHz
> Compatible: DHI-ARC3000H-W2(868), DHI-ARC3000H-GW2(868), DHI-ARC3000H-FW2(868)
> Sensor type: Photoelectric chamber
> Notification: Visual and audible
> Standard: EN 14604:2005, AS 3786:2014