Anself Digital Wireless Indoor Thermohygrometer with 3 Remote Sizeensors 98ft/ 30m Backlight & Calibration Function Humidity Monitor with 3 Transmitters Weather Sizetations for Home Office Gree

【Wide Application】Suitable for indoor and outdoor, for bedroom, baby room, office, greenhouse, wine cellar, warehouse, etc. Totally wireless, tabletop and wall-mounted design. 【3 Remote Sensors】Remote sensor for indoor and outdoor use, not waterproof, 98ft/ 30m effective distance, long range measuring. One main unit can pair up to 3 outdoor remote sensors. 【Multiple Data Display】Displays time, calendar, week, indoor and outdoor humidity, temperature, temperature and humidity trend, comfort level, and record maximum and minimum temperature/ humidity. 【Calibration Function】Features calibration function of temperature and humidity to account for any drift that may be present in the system. 【Backlight & Alarm Function】Backlight off, backlight on (white), upper limit alarm (orange backlight), lower limit alarm (red backlight). Clear display in the dark, about 8 seconds auto off to save energy. 【12H/ 24H & ℃/ ℉ Switchable】12 or 24 hours time format switchable. Change the temperature display to ℃ or ℉. 【Check/ Clear Records】You can check the maximum or minimum temperature/ humidity in the past. And you can view or clear records. 【Battery Operated】Need USB cable or 3 * AAA battery to power the main unit and 2 * AAA battery to power the sensor. (Batteries not included)