Features1With Connecting Line Role: Alarm power off with, you can control the customer wants to control the equipment, wind level to the set level will be powered off. 23 Fan Blades: This anemometer adopts wind speed measurement with three cups fan blades, aluminum wind cup, wearproof and durable, 360 degree wind speed measurement with high accuracy. 3Wide Measuring Range: The wind speed alarm has a wide measuring range and strong anti interference ability, with anti electromagnetic interference function. 4Power Failure Memory Function: The digital circuit of wind speed alarm adopts CMOS chip with power failure memory function, which saves both time and power. 5Wind Speed Display: Window Wind Speed displays the current actual wind speed; Set Wind Level displays the current alarm wind level; Maximum Wind Level displays the maximum wind level of the day.SpecificationItem Type: Wind Speed Alarm DeviceWeight: 1105g / 38.98oz Material: Aluminum AlloyPower Supply: USB 5VInput Voltage (actual withstand voltage): 220VHost Size: Approx. 18.3x10.5x5.1cm / 7.2x4.1x2.0inHost Mounting Aperture: Approx. 17cm / 6.69inWind Cup Installation Aperture: Approx. 4cm / 1.57inWind Cup Cable: Approx. 8m / 26.24ftApplicable Scenario: Power plant wind speed measurement, weather stationWind Level Accuracy: 0.3 levelWind Level Setting: 2-12 levels (can be set sequentially at 0.5 levels/each time)Accuracy: 5%Starting Wind Speed: 0.7m/sWorking Temperature: -30-65 DegreeCPackage List1 x Host 1 x Connection Cable 1 x Fixed Bracket 1 x Fixed Bracket Accessories 5 x Screw 5 x Nut 1 x Wind Cup with Cable