This smart weather station with clock collects weather data via internet to display weather information,time,date,temperature and humidity based on its location. Every main machine connects up to three auxiliary machines(package include 3 unit). Place the auxiliary machine indoor or outdoor, the collected data will be transmitted and displayed to the main machine indoor.You can also configure and control it via your phone, and check the weather data, indoor/outdoor temperature history data from the APP or the main machine indoor. Features: 【Large Color Screen】Large color screen , which displays more informations you need: UV index,Air pressure,Wind speed,Sensible temperature, Temperature, Humidity and weather forecast(sunny, cloudy, rain, snow,thunderstorm, partly cloudy). 【3-Channel Support】Indoor outdoor thermometer  contain 1 main built-in wifi temperature sensor humidity sensor and one remote transmission, support extra sensor up to 3((packag include 3 unit), data scrolling display. 【Switchable Format】Easy to operate via APP to switch the temp unit F/C,Wind speed unit mph/ km/h,Air pressure unit hpa/mbar and Time unit 12/24 Hour formats. 【Brightness Adjustable 】 Functionality will be implemented by just touching the top of the  thermometer to switch among 3 Brightness levels. 【Widely Used】Suits various scenario like bedroom, attic, garage, pet case, cellar, refrige etc. UV/Pressure/Wind speed/Temperature/Humidity alarm can be setted, warning you according to the limits you set. 【Easy To Use】The weather station clock can be hung on the wall, or put on desk, easy to install. The sensor can be hung up with string, or be attached on the metal surface. Specifications: Sensor Qty : 3pcs Material: ABS Input: 100-240V, 50/60Hz USB Input: 5V/2A USB Output: 5V/1A APP: Smart Life / Tuya Wifi Standby Current: About 6uA for auxiliary machine Standby Time: 6 months for auxiliary machine Communication Way: Wifi(2.4G)BLE module Communication Frequency for Auxiliary Machine: 433MHz Communication Distance for Auxiliary Machine: 80M (empty outdoor environment) Temperature Display Unit: / Humidity Display Unit: RH% Temperature Range & Accuracy: -2060, 0.5 Humidity Range & Accuracy: 0%99%, 2%RH Operating Temperature: -2060 Auxiliary Machine Power Supply: 3V 1000mA, CR2477 button cell (Not Included) Main Machine Size: 160 * 23.5mm / 6.30 * 0.93in Auxiliary Machine: 45 * 15mm / 1.77 * 0.59in Item Weight: 355g / 12.52oz Package Weight:600g / 21.15oz Package Size: 19.5 * 18.5 * 6.3cm / 7.68 * 7.28 * 2.48in Packing List: 1 * Weather Station Main Machine 3 * Sensor 1 * USB Cable 1 * Manual Tips:  Delivery without adapter.