PortIndicator Light1 × green alarm indicatorButton1 × power buttonFunctionTamper AlarmYesRemote UpgradeCloud updateTest ModeYesLow Battery AlarmYesSearchSignal strength detectionWirelessCarrier Frequency868.0 MHz–868.6 MHzCommunication DistanceUp to 1,000 m (3,280.84 ft) in an open spaceCommunication MechanismTwo-wayFrequency HoppingYesEncryption ModeAES128GeneralPower Supply2 × CR123A batteriesPower ConsumptionMax. 240 mWOperating Temperature–10 °C to +55 °C (+14 °F to +131 °F) (indoor)Operating Humidity10%–90% (RH).Product Dimensions81.0 mm × 81.0 mm × 26.0 mm (3.19" × 3.19" × 1.02") (L × W × H)Packaging Dimensions135.0 mm × 98.5 mm × 56.8 mm (5.31" × 3.88" × 2.24") (L × W × H)InstallationBracket mountNet Weight105 g (0.23 lb)Gross Weight175 g (0.39 lb)CertificationsCEBattery Life2.5 years in working status (triggered twice every week and alerts 120 s for each triggering)Sound Pressure≥ 105 ± 3 dB\1MCasingPC + ABSTemperatureMeasuring Range–15 °C to +65 °C (+18.8 °F to +149 °F) (indoor)Measuring Precision± 1 °C (± 33.8 °F)Resolution1 °C (33.8 °F)Audio/Video ParameterVolume Adjustment3 volumn levels