SMART SENSOR Wind Gauge ST9606 Portable Handheld Anemometer Wind Speed Meter Features: Wind speed unit conversion. Wind speed and wind measurement. Data retention function, low power indication. Data retention with maximum, minimum, and average values. High and low wind speed alarm function, automatic or manual shutdown function. Specifications: Condition: Brand: SMART SENSOR Model: ST9606 Wind speed range m/s(Meter /second) 0.3-30 Km/h(Kilometer/hour)| 1.08~108 mph(Mile/hour) 0.67-67 knots(Nautical/hour) 0.58-58 Wind speed accuracy +/-5% rdg +/_0.1 Wind speed resolution 0.1m/s Temperature range -10℃-45℃/14F~113F Temperature resolution 0.1C/0.1F Power supply 1.5V AAA battery X3(Not included) Operation environment 0C~50℃:≤80% RH Storage environment -10℃~50℃:0%~90% RH Package List: 1*Wind Speed Meter 1*Instruction Manual