HoldPeak Digital Anemometer Wind Speed Meter HVAC Velocity Air Flow Wind Guage
LCD display with backlight, it is easy to read value at night. Wind speed unit is switchable: m/s, km/h, ft/min, knots or mph. Resolution: 0.1m/s; 19ft/min; 0.2knots; 0.3km/h; 0.2mph. With wind scale and windchill indication.