Features: 1Efficient Control: Remote power control through smartphone sensing, allowing for convenient and quick operation. 2Multi Functional Design: Supports PT100 temperature detection and SMS power outage alerts, combining multiple functions in one device. 3Safety and Reliability: Made from aluminum material, providing resistance against shocks and pressure, ensuring long term safe and reliable usage. 4Versatile Applications: With 8 channel relay switch functionality, it can be used in various scenarios and settings 5Flexible Configuration: Supports both normally open and normally closed output logic, catering to a wide range of relay application needs. Specification: Item Type:4GSMSAlarmControllerMaterial: AluminumUsage: Relay SwitchPower Consumption: Standby 12V 50mA, Maximum 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 fullOutput Logic: Normally Open (NO) and Normally Closed (NC)Weight: Approx. 537.00g / 18.94oz Package List: 1 x Remote Control1 x Control Panel1 x Power Adapter1 x User Manual3 x Accessories