1、Used to monitor temperature and humidity, which has accurate measurement. 2、‑10℃‑50℃ temperature measurement range, 25%RH‑95%RH humidity range. 3、Powered by 65mAh LR1130 battery, it has a long endurance, and is easy to replace. 4、Simple to use, once the battery isolation film is removed, the device will automatically start to work. 5、Compact size, lightweight and portable, easy to carry and store, bring much convenience for you. ----------------------- Condition: 100% Brand New Item Type: Hygrometer Thermometer Material: Aluminum Shell, Plastic Lens Weight: Approx. 37g/1.3oz Temperature Measurement Range: 14°F -122°F (-10°C-50°C) Accuracy (Temperature): ±1℃/℉ Humidity Range: 25%RH-95%RH Accuracy (RH): ±3% Battery Type: LR1130 (Included) Battery Capacity: 65mAh Voltage: DC1.5V Size: Approx. 47 x 47 x 15mm/1.9 x 1.9 x 0.6in Instruction: 1\. Once the battery isolation film is removed, the device will automatically start to work, and the digital thermometer and hygrometer will display correctly after 20 minutes of power on. 2\. Open the battery door with your thumb, replace the LR1130 battery with a new LR1130 battery according to the specified range, close the battery door, and the device will resume normal operation after 20 minutes. ----------------------- 1 x Hygrometer 1 x Manual1 x Magnet