Feature: 1. Efficient Control: Remote power control through smartphone sensing, allowing for convenient and quick operation. 2. Multi Functional Design: Supports PT100 temperature detection and SMS power outage alerts, combining multiple functions in one device. 3. Safety and Reliability: Made from aluminum material, providing resistance against shocks and pressure, ensuring long term safe and reliable usage. 4. Versatile Applications: With 8 channel relay switch functionality, it can be used in various scenarios and settings 5. Flexible Configuration: Supports both normally open and normally closed output logic, catering to a wide range of relay application needs. Specification: Item Type: 4G SMS Alarm Controller Material: Aluminum Usage: Relay Switch Power Consumption: Standby 12V 50mA, Maximum 12V 200mA 4G Frequency (LTE FDD): B1 B3 B5 B7 B8 B20 GSM Frequency: 900 1800 Mhz SIM Card Interface: Standard SIM card Antenna Interface: Standard SMA Interface Temperature and Humidity Interface: 1 Sensor Port Temperature Detection Range: -40 to 125°C Humidity Detection Range: 0 to full Output Logic: Normally Open (NO) and Normally Closed (NC) Weight: Approx. 537.00g / 18.94oz. Package List: 1 x Remote Control 1 x Control Panel 1 x Power Adapter 1 x User Manual 3 x Accessories