Versatile design: Use calibrated sensing modules to reduce deviations and improve accuracy, with temperature units selection for fast switching. Widely applicable to temperature and humidity measurement of room, , library, commercial center, communication centers and other equipment. Portable and convenient handheld size: The meter is small and portable, and the white backlight LCD display can be used in dark environments. High- design: Humidity and temperature are designed with high- humidity and temperature sensors for high accuracy, fast response and stable readings. More functions: Data hold, MIN, enable/disable auto power off, over range indication, low battery indication. Data Update0.5s Auto Power Off 15min Power Supply:3 x 1.5V AAA batteries (NOT included) Battery Life 50 hours The printing batches are different, and if there are slight differences in the actual words, it not affect the use Color: Black Material: ABS Package Contents: 1 x Temperature Humidity Meter 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.