Features: brand new and high quality Real-time monitoring of temperature and humidity, creating a comfortable and healthy environment for the family, simple, and practical. When the temperature and humidity exceed the upper and lower limits of the setting, the receiver will send out a corresponding colorful alarm. During use, it is considered that there is a more standard temperature Humidity data can be set and calibrated accordingly. DC5V power supply line power supply, which perfectly solves the inaccurate test problem caused by insufficient battery power in the later stage of battery power supply. When the product is powered by the power cord, standard mode, you can long press the button to choose to turn on or off the backlight alway on, turn on the energy-saving mode, the backlight is not It turns off after seconds at any setting. Specifications: Clock/alarm/snooze function. Temperature switch. 12/24 Hour system switch. Year-month-day display. Comfort display. The temperature and humidity trend icon detects rapid changes in temperature and humidity. Max/min setting. Material: Plastic Size: approx.12.5x12.5cm/4.92x4.92in Optional Color: Black, White Power Supply: 3xAAA Batteries (not included) Quantity: 1 Pc Package Includes: 1 x Digital Hygrometer 1 x Charging Cable 1 x Instructions note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to difference between different monitors, the picture may not reflect the actual color of the item.