Note WiFi version: It can be directly connected to tuya smart life APP through wifi, no other gateway device is required. Zigbee version: tuya zigbee gateway is required to connect to tuya smart life APP How to connect to APP Specifications: 1. Intelligent Linkage When the ambient environment change, you can do intelligent linkage. For example, the air conditioner will be on automatically when the room temperature surpass 35. And the humidifier will spray when the humidity is lower than 20% RH. 2. Temperature Unit Selection in APP You can choose or as the temperature unit through app. 3. Third-party Voice Control Works with amazon alexa, google assistant. Input vollage:DC3V LR03*2 WiFi:802.11b/g/n 2.4GHz Zigbee 3.0 Working temperature:-10~55 Working humidity:10%~90%RH Package Included: sensor*1 Manual *1