Features: 1Efficient Remote Control: Monitor and control the temperature and humidity alarm remotely anytime, anywhere through the mobile app or web interface. 2Alert Notifications: Receive timely temperature and humidity change updates and power outage alerts via phone calls and text messages, ensuring you stay informed. 3Wide Applicability: Suitable for various settings including homes, offices, and warehouses, catering to different needs. 4Multi Functional Temperature and Humidity Monitoring: Accurately monitor temperature range (40 to 125) and humidity range (0 to full), helping maintain a stable environment. 5Reliable Relay Output: Equipped with a 1 channel relay output, supporting 10A 250VAC and 15A 125VAC, with multiple output logic options for versatility and flexibility. Specification: Item Type: 4GSMSAlarmControllerMaterial: AluminumProduct model: SM1 WLTE EAUsage: Relay SwitchPower Consumption: Standby 12V 50mA, Maximum Working 12V 200mA4G Frequency (LTE FDD): B1 B3 B5 B7 B8 B20GSM Frequency: 900 1800 MhzSIM Card Interface: Standard SIM CardAntenna Interface: Standard SMA InterfaceTemperature and Humidity Interface: 1 sensor portTemperature Detection Range: -40 to 125CHumidity Detection Range: 0 to fullRelay Output: 1 channel, 10A 250VAC 15A 125VACOutput Logic: Normally Open and Normally ClosedWeight: Approx. 286.00g / 10.09oz Package List: 1 x Remote Controller1 x Plug1 x User Manual2 x Accessories