Flow speed, wind temperature, wind chill, low battery indication on the backlit LCD display. The BT-100 is a portable anemometer that accurately measures wind speed in 5 units:Meters per second, kilometers per hour, feet per minute, knots, miles per hour. Wind Temperature / (Celsius / Fahrenheit) Anemometer measuring wind speed range is 0.3-30m/s (+/- 5% of reading), the range wind temperature range is -10 to 45(+/-2), 0.1m/s resolution; 0.2. With 2 sensitive sensors and a sensitive 8-blade fan, this BT100 Pro high precision anemometer can help you with HVAC installations, CFM calculations, duct ventilation. There is a metal threaded hole at the bottom of the anemometer, which can be fixed on a tripod to avoid strong winds. Keep your hands free when flying drones, rc planes, wings, helicopters and quadcopters, for long distance shooting. This is a pocket-sized, lightweight and portable anemometer that you and your family can measure outdoors for outdoor activities, such as: shooting, sailing, deer -flying, mountaineering, driving Using drones, etc. Optional manual/auto sleep, backlit screen lets you see clearly even in the dark. When you receive your anemometer, it is ready to use. Add to cart, buy, use, if there is any quality problem, we will replace it for you. BT-100 Anemometer (battery free) Keep up with changing wind conditions With sensitive dual temperature sensors and 8 blades, the BTMETER BT -100 can take accurate air velocity/temperature readings in HVAC, industrial, and hobbyist systems. Forget the guesswork and know exactly how wind conditions change for flying, skiing, sailing, shooting, windsurfing and other outdoor activities. Read maximum/minimum/average/current wind speed Features: Optional temperature unit: / Wind temperature range: 14F-113F Wind Speed Range: 0.67~67.1 mph Follow wind conditions for outdoor shooting. BT-100 anemometer can help you make every hunting, drone flight, kite, boating safer and more enjoyable. Long distance shooting Read max/min/avg and current wind speed. Know the wind speed, gusts before pulling the trigger. It is an ideal entry-level anemometer for long-range shooting. HVAC System Accurately check airflow from air conditioners, vents, dust collectors, etc. Air Flow (CFM) (Q) = Velocity (CFM) (V) x Duct Cross Section (A) Natural Wind Ideal for windy weather, chasing tornadoes and gardening. It's time to stay one step ahead of nature. Become very rich