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Product Description: Photoelectric detection ceiling mounted optical labyrinth using low-power CMOS microprocessor independent / networking / wireless output (optional) with manual test, manual reset function, stable performance, unique structure, dust, pest control, resistance External Light Interference Product Information Sensor Optics Labyrinth Operating Voltage 9VDC/12VDC Operating Current Electrostatic Current Less than 10ua Alarm Operating Current 10 - 30ma Smoke Sensitivity Meets ul217 Standard Test Value 3.2% per Foot Weak Gray Smoke Detector Responsive Operating Environment -10°C ~50°C Alarm Volume: 85 dB at 10 ft. Alarm Output Wired Networking: (NO,NC) Wireless Networking: 315MHZ/433MHZ (2262 OR 1527)