Features: This is a professional handheld meter that can measure both humidity and temperature. Designed with large LCD display that can shows humidity and temperature at the same time. It supports maximum/minimum reading, and data storage function. Temperature unit is switchable between ℃ and ℉. LCD display has backlight function for convenient reading. The meter also has low battery indication function. Specifications: Model: GM1360 Temperature Measurement Range: -10℃ to 50℃ Temperature Accuracy: ±1℃ or 1.8℉ Humidity Range: 5% rh to 98% rh Humidity Accuracy: ±3% RH (30~98%RH); ±5% rh (5 ~ 30% rh) Precision: 0.1℃ / 0.1% RH Sampling Rate: 2.5 times/second Power Supply: 1x 9V battery (NOT included) Size: 20.7*6.8*3mm/0.8*0.3*0.1in Weight: 274g(approx.) Package Includes: 1 * Temperature and Humidity Meter (battery is NOT included) 1、This is a professional handheld meter that can measure both humidity and temperature. 2、Designed with large LCD display that can shows humidity and temperature at the same time. 3、It supports maximum/minimum reading, and data storage function. 4、Temperature unit is switchable between ℃ and ℉. 5、LCD display has backlight function for convenient reading.