Smart Temperature Humidity Switch APP Remote Control As long as your phone has a data network, you can control the switch anywhere and at any time by the APP. APP can check the real-time status of switch andthe temperature and humidity values at any time. Application scenarios Waterproof temperature sensors can be used in fish tanks, Monitoring water temperature changes at any time. Temperature and humidity sensors are suitable for various scenarios such as baby rooms, storage rooms, greenhouse planting, and greenhouse cultivation. Automation It can be set to automatically switch on and off within a certain range of temperature and humidity. Input voltage: AC85~250V 50/60Hz Output voltage: AC85~250V 50/60Hz Max. Current: 20A Max. load: 3800W (Resistive) Wi-Fi Standard: Wi-Fi 2.4Ghz b/g+Bluetooth Working temperature:-20℃~80℃ Working humidity: 80% Size: 93x55x31mm Color: White Material: plastic Package Contents: 1 * Host 1 * Sensor 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.