Wireless sirenSignal strength detectionLow battery alarmTemperature measurementFrequency hopping function and two-way communication technologyCloud update and automatic recovery from update failure—PortIndicator Light : 1 × green alarm indicatorButton : 1 × power buttonFunctionTamper Alarm : YesRemote Upgrade : Cloud updateTest Mode : YesLow Battery Alarm : YesSearch : Signal strength detectionWirelessCarrier Frequency : 868.0 MHz–868.6 MHzCommunication Distance : Up to 1,000 m in an open spaceCommunication Mechanism : Two-wayFrequency Hopping : YesEncryption Mode : AES128GeneralPower Supply : 2 × CR123A batteriesPower Consumption : Max. 240 mWOperating Temperature : –10 °C to 55 °C (indoor)Operating Humidity : 10%–90% (RH).Product Dimensions : 81.0 mm × 81.0 mm × 26.0 mm (L × W × H)Packaging Dimensions : 135.0 mm × 98.5 mm × 56.8 mm (L × W × H)Installation : Bracket mountNet Weight : 105 gGross Weight : 175 g Certifications : CEBattery Life : 2.5 years in working status (triggered twice every week and alerts 120 s for each triggering)Sound Pressure : ≥ 105 ± 3 dB1MCasing : PC ABSTemperatureMeasuring Range : –15 °C to 65 °C (indoor)Measuring Precision : ± 1 °CResolution : 1 °C Audio/Video ParameterVolume Adjustment : 3 volumn levels—
