Wire smoke alarm and detector

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DG311 Powered Photoelectric Smoke Alarm with excellent stability and high-sensitivity by Advanced MCU Expert Algorithm Software.
Key Specifications/Special Features

•Advanced MCU Expert Algorithm Software to prevent the most smoke alarm fault.
•Power Source: DC9-28V
•Audio Alarm: ≥ 85dB/3m
•Temperature Range: 0℃ to 40℃
•Humidity Range: 5%-95% relative humidity(RH)
•Sensor: Photoelectric
•Size: diameter 105mm in diameter x59mm depth
•Interconnects: Yes
•Easy to install with mounting base included
•Suitable for any room
•Low battery signal
•Test button for simple testing