Feature: 1. Multi Functional Controller: Allows APP, Web remote control of the electromagnetic remote switch, offering a convenient user experience for your remote control needs. 2. Temp Humidity Coupling: Connected with a temperature and humidity sensor, intelligently triggers on or off the remote switch based on environmental temperature and humidity changes. 3. 4G Network Connection: Adopts 4G frequency, eliminating the need for WiFi. Control the remote relay switch anytime, anywhere for greater convenience. 4. Reliable and Durable: Made with aluminum material for outstanding durability and stability. Provides long lasting use experience by working stable for prolonged periods. 5. Power Off Alert Function: Notifies users via SMS when there is a power failure circumstance. Ensures your equipment will not be affected by power outages. Specification: Item Type: 4G relay switch Material: Aluminum Weight: Approx. 297g / 10.5oz Model: SM2 WLTE EC 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 Interface: Standard SIM card Antenna Interface: Standard SMA interface Temperature and Humidity Interface: 1 sensor port Temperature Detection Range: -40-125°C Humidity Detection Range: 0-100% Output Logic: Always open, always closed Package List: 1 x Remote Switch1 x Adapter1 x Manual2 x Accessory