Dahua Fire Detectors

DHI-HY-SA21A-W2(868) Wireless smoke detector The Dahua wireless smoke detector offers battery-powered smoke detection and alarm functions within one unit. Advanced electronics in combination with a photoelectric smoke detection chamber ensure early detection of smoke and high immunity against false alarms. This type of smoke detector does not require a mains power supply and is suitable for general residential applications. Timely notification from the smoke detector can be displayed on the DMSS app in real time. Specifications: Working Principle Collection Type - Smoke Sampling Period - 10 s Sensor Type - PhotoelectricAlarm Alarm Type - Smoke alarm, fault alarm, 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/mBasic Parameters Indicator Light - Red and green LED indicator LED Instructions -Standby: Green indicator flashes once perminuteAlarm: Red indicator flashes once per secondFault: Red indicator flashes once per minuteLow battery warning: Red indicator flashesonce per minute Coverage Area -When the height of the space is less than 8m (3.28 ft), the protection area of a device is 20 m2 –40 m2Power Supply Battery Life - 3 years Operating Voltage - 3V CR123A lithium battery (replaceable) Operating Current - Monitoring current: ≤ 35uA Alarm current: ≤ 35mAOperating 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 - φ98mm × H43.1mm (φ3.85" × H1.70") Weight - 140g (0.30lb) Installation - Ceiling Mount

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