Working Principle Collection Type Smoke Sampling Period 10 s Sensor Type Photoelectric Alarm Alarm Type Smoke alarm, fault warning, low battery warning Alarm Volume 85dB–90dB(A) at 3 m (9.84 ft) Alarm Mode Visual and audible alarm Silence Function Yes Silence Duration About 12 min Alarm Response Threshold 0.2 dB/m - 0.3 dB/m Basic Parameters Indicator Light Red and green LED indicator Led Instructions Standby: Green indicator flashes once per minute Alarm: Red indicator flashes once per second Fault: Red indicator flashes once per minute Low battery warning: Red indicator flashes once per minute Coverage Area When the height of the space is less than 8 m (26.25 ft), the protection area of a device is 20 m2–40 m2 Power Supply Battery Life 3 year Operating Voltage 3V CR123A lithium battery (replaceable) Operating Current Monitoring current: ? 35uA Alarm current: ? 35mA Operating Ambient Operating Environment Indoor Operating Temperature -10°C to +55°C (+14°F to +131°F) Operating Humidity ? 95% RH (non condensing) Appearance Color White Casing ABS Dimensions ?98 mm × H43.1 mm (?3.85" × H1.70") Weight 140 g (0.30 lb) Installation Ceiling Mount Certifications Certifications TÜV and CE listed Compliance Standard EN 14604:2005+AC:2008 Wireless Carrier Frequency 433.1 MHz–434.6 MHz Communication Distance Up to 1000 m (3280.84 ft) in an open space Communication Mechanism Two-way Frequency Hopping Yes Encryption Mode AES128

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