Features: LCD screen to display weather information, time, date, indoor/outdoor temperature and humidity simultaneously, and the display content can be DIY according to your own preferences. Acquire and sync weather data automatically via network all day. The weather data, indoor/outdoor temperature history data also can be checked from the Smart Life APP via mobile phone. pressure / UV index / wind speed / temperature / humidity alarm reminder setting. Supports up to 3 units of auxiliary sensors(package only include 1 unit) to collect temperature and humidity data based on its locations simultaneously. Display brightness 3 modes adjustable, increase the night mode, which does not affect your sleep. (Tap on the top of the main unit to adjust brightness) The 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: Input: 100-240V, 50/60Hz Output: 5V, 2A 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: -20~60, 0.5 Humidity Range & Accuracy: 0%~99%, 2%RH Operating Temperature: -20~60 Auxiliary Machine Supply: 3V 1000mA, CR2477 button cell Material: ABS colour: White Package Contents: 1 x Indoor Main Machine 1 x Indoor/Outdoor Wireless Sensor Auxiliary Machine 1 x USB Cable 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.