4 in 1 Environmental Thermoanemometer

Measures 11 environmental conditions including light|Auto-rotating, dual-line LCD with backlight for easy reading in low light|Operational modes include auto-off and low-battery indicators, MIN/MAX, and data hold|Measures humidity, temperature, air velocity, and light|Versatile anemometer uses a low-friction vane and displays air velocity measurements in five units. High-precision humidity sensor provides a quick response time to make accurate calculations for wet bulb, dew point, heat index and windchill readings. Dual-line display simultaneously shows relative humidity and temperature, or air velocity and temperature. Optional external high-accuracy temperature probe expands the measurement range to 14 to 212F (-10 to 100C).