installation, debug and repair for refrigeration industry, ventilation duct, environment monitor, navigation measurement, weather forecast, collection of the weather datum for outdoor busywork and fire department. am-4838 , am-4832, am-4822, am-4812. model: anemometer am4832 measuring: wind speed 0.4-30.0m/s 1.4-108.0km/h 80-5910ft/min 0.8-59.3 knots temperature 0-60℃ 32-140℉ accuracy: ±2%n+2d resolution:0.1/1 display: lcd display power supply: 4x1.5v aa (um-3) battery battery indicator: low battery indicator dimensions: 141x72x31mm weight (not including probe): 248g e－mail：sale@landteknet.com landtek@126.com skype: samantha518 contact person : samantha sun (miss)