Item Type: Reptile Humidity Temperature Meter Material: ABS Battery: Button Cell (2032 Battery) Battery Capacity: 210mAh (included) Supply Voltage: 3V Temperature Detection Range: 0?50C Humidity Detection Range: 20?95% 1COMPACT AND PORTABLE: Reptile humidity temperature meter is lightweight and compact, does not take up much space, easy to place and store. 2EASY TO USE: Reptile digital thermometer is easy to operate and provides easy access to the temperature and humidity of the pet's environment with a single click. 3DIGITAL DISPLAY: Reptile digital hygrometer has a clear display and can be seen from all angles, regardless of light and angle. 4MAGNETIC DESIGN: Reptile humidity temperature sensor has a magnetic design with magnetic core fixings for easy installation, or you can use adhesive mounting. 5APPLICABLE OBJECTS: Reptile thermometer hygrometer is powered by battery, easy to replace and use, suitable for reptile tank, glass water tank, etc. 1 x TemperatureandHumidityMeter 1 x MagneticFixings 1 x Battery 2 x Adhesive