Features: 1Multifunctional Design: Equipped with 4G network, APP WEB temperature and humidity linkage, and SMS power outage alarm functions to meet different needs. 2Widely Used: SM2 WLTE EA 2 way 4G romote controller can be used as a relay switch, suitable for various scenes and equipment. 3Flexible and Convenient: Standard SIM card and antenna interface, easy to operate, easy to install and use, good using experience. 4Accurate Monitoring: Equipped with temperature and humidity sensor ports, with a wide detection range and real time accuracy. 5Aluminum Material: SM2 WLTE EA 2 way 4G remote controller is made of aluminum material, durable, reliable, and long lasting. Specification: Item Type: 4GMobilePhoneAccessControllerProduct Material: AluminumWeight: Approx. 296g / 10.4ozUsage: Relay SwitchPower Consumption: Standby 12V/50mA, Maximum 12V200mA4G Frequency (LTE FDD): B1/B3/B5/B7/B8/B20GSM Frequency: 900/1800 MHzSIM Interface: Standard SIM CardAntenna Interface: Standard SMA InterfaceTemperature and Humidity Interface: 1 Sensor PortTemperature Detection Range: -40 to 125Humidity Detection Range: 0 to 100%Relay Output: 2 Channels, 10A 250VAC 15A 125VACOutput Logic: Normally Open and Normally Closed Package List: 1 x Remote Controller1 x Plug1 x User Manual2 x Accessories1 x Probe