Feature: 1. EROSION RESISTANT MATERIAL: The temperature humidity meter is made of excellent ABS material, which is wear resistant and erosion resistant and can adapt to various harsh environments 2. STABLE AND RELIABLE: The TA620A is a stable, safe and reliable handheld digital hygrograph. With automatic shutdown function, no operation within 15 minutes automatically shut down 3. HIGHLY ACCURATE READINGS: This handheld thermo-hygrometer provides very accurate measurements, ensuring you have the most accurate data for optimal decision making. 4. SUPPORTED STORAGE: The indoor temperature humidity meter has a maximum, minimum, average mode, unit conversion between degrees Celsius and Fahrenheit, as well as a data storage function that can store 99 data units 5. SMALL AND PORTABLE: The handheld temperature humidity meter is small in size, light in weight and easy to carry, and can be used in growing gardens, laboratories, wine cellars, farms, storage rooms, families and so on Specification: Item Type: Temperature and Humidity Meter Material: ABS Temperature Range: -20~60℃(-4~140℉) Temperature Accuracy: ±1.5℃; ±3℉ Relative Humidity Range: 0~100%RH Humidity Accuracy: ±5%RH (20~80%); Other Ranges: ±8%RH Display: Four digit display, maximum 1999 Sensor: For GXCAS GXHTC3 chip Sampling Rate: 8 Times per second Auto Power Off: 15 Minutes(can be manually turned off) Operating Environment: -10~50℃, maximum 80% relative humidity; indoor altitude < 2000m Storage Environment: -10~60℃, maximum 80% relative humidity(remove battery) Battery: 2 x 1.5V AAA battery(not included). Package List: 1 x Temperature Humidity Meter 1 x User Manual 1 x Storage Bag