Features: High precisions Temperature Humidity Meter delivers accurate relative humidity, dew point, and wet bulb measurements with accuracy, perfect for HVAC and industrial applications. Equipped with a LCD backlight, data hold function, and ABS cover protector, this hygrometer ensures reliable readings in harsh environment. For homeowners, engineers, and lab technicians requiring precise environmental monitoring in space like wine cellars, data centers, or residential HVAC systems. Ideal for industrial facilities, agricultural storage, and daily household use to prevent moisture damage, optimizing air quality, and guard sensitive equipment. Its protecting ABS casing and portable design make a must digital hygrometer for fieldwork, construction sites, and professional grade humidity temperature meter tasks. Specifications: Material: Plastic Battery: 3x1.5V Battery Requires(NOT Include) Temperature: -20 to 60℃ (-4 to 140℉)±1.5℃ Dew Point Temperature: -50 to 60℃ (-58 to 140℉)±1.5℃ Wet Bulb Temperature: -20 to 60℃ (-4 to 140℉)±1.5℃ Humidity: 0-100%±5% Data Holder: YES Backlit: YES Auto Power Off: YES Low Battery Indication: YES Size: About. 142x58mm/5.59x2.28in Package Includes: 1pc hygrometer note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.