Description Made of high quality plastic material, non-toxic and odor-free, safety to use. This digital hygrometer is perfect for indoor use in homes and also can be used for industrial applications and other occasion. Modeling simple, elegant, LCD panels inline connections, moisture-resistant, strong anti-interference, applies to refrigerated cabinets, display counters and other needs of temperature measurement and display of various equipment. It can help you to check the indoor temperature and humidity effectively. It is a great gift for your home to provide you with better quality and healthier living environment. Specification: Opening size diameter: 41mm (measurement has small error). The shape diameter: 45.2 (the measurement has a small error). Humidity display. Humidity measurement range: 10% to 99%. Humidity display resolution: 1%. Humidity sampling period: 10 seconds (1 minute). Humidity measurement accuracy: ± 5%. Rated voltage: DC1.5v (1 AG13 button battery). Temperature measurement range: -50 to 70. Temperature measurement accuracy: ± 1 degree (at normal temperature). Color: white. Note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Package include: 1 * Digital Hygrometer Thermometer.