Features: 1Efficient Remote Control: Monitor and control the temperature humidity alarm anytime and anywhere through the mobile APP or WEB interface. 2Multiple Alarm Notifications: Receive notifications via phone calls and SMS to ensure real time temperature humidity changes and power failure alerts. 3Wide Applicability: Suitable for various scenes such as home, office, and warehouse, meeting different needs. 4Multifunctional Temperature Humidity Monitoring: Accurately detect temperature range (40 to 125) and humidity range (0 to 100%), helping maintain a stable environment. 5Reliable Relay Output: 1 channel relay output, supporting 10A 250VAC and 15A 125VAC, with multiple output logic options. Specification: Item Type: Mobile phone access controller Material: AluminumWeight: Approx. 309g / 10.9ozModel: SM1 WLTE EAUsage: Relay SwitchPower Consumption: Standby 12V 50mA, operating maximum 12V 200mA4G 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: -40-125Humidity Detection Range: 0-100%Relay Output: 1 Channel, 10A 250VAC, 15A 125VACOutput Logic: Normally Open and Normally Closed Package List: 1 x Mobile Phone Access Controller1 x Plug1 x Manual2 x Accessory1 x Probe