This wireless sensor offers real-time monitoring of indoor temperature and humidity, which can be monitored remotely via the APP. When these data are abnormal, it will sent alert to your phone, helping you better know and improve the environmental conditions. Features: * Detect and display real-time temperature and humidity condition on HD LED-screen, which can be also synchronized to your phone, helping you informed of environmental changes. * Multiple temperature modes can be flexibly adjusted to adapt to diverse scenarios, meeting your different needs. * Set the comfort zone via the Tuya APP and it will automatically alarm when the data of temperature or humidity are abnormal. * Radio transmission circuit and coding technology are adopted to solve the problem of signal interference blocking. * Powered by AA*3 battery (not included) with ultra-low power consumption, offer long battery life for use. * Equipped with low-voltage monitoring indicator function to remind you to change the battery in time. * Anti-dismantle design and split design, professional and reliable. Specifications: Material: PC + ABS Color: White Communication-method: WiFi Wi-Fi standard: 802.11b/g/n Channel: 1-14-2.4GHz Power Supply: DC4.5V (AA * 3 battery, not included) Communication distance: 70 meters (open) Installation method: desktop placement / Wall Hanging Temperature: -10 degree to 55 degree Humidity: 0-100 per cent RH Item Size: 64*64*28mm / 2.52*2.52*1.1in Package Size: 68*68*50mm / 2.68*2.68*1.97in Package Weight: 160g / 5.64oz Note: * After replacing the battery, you need to reconnect the sensor and the mobile phone, between which cannot be automatically reconnected. Package List: 1 * Temperature Sensor