Features1With the Connection Line: Power off after alarm, you can control the customer wants to control the equipment, the wind level to the set level will cut off the power. 2Three Cups Type Wind Cup: This anemometer adopts wind speed measurement with three cups type wind cup, 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. 5Display: 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. 6Prime Material: Aluminum alloy wind cup, wear resistant and durable, rust resistant, can be used for a long time, suitable for outdoor environment.SpecificationItem Type: Tower Crane Anemometer Weight: 694g / 24.5oz Material: Aluminum, PlasticPower Supply: USB 5VHost Size: Approx. 11.5x6x3cm / 4.5x2.4x1.2inHost Mounting Aperture: Approx. 1.5x3.9cm / 0.6x1.5inWind Cup Installation Aperture: Approx. 4cm / 1.6inWind Cup Cable: Approx. 8m / 26.2ftApplicable Scenario: Power plant wind speed measurement, weather stationWind Level Accuracy: 0.3 levelSetting Wind Level: 2-12 levels (can be set sequentially at 0.5 level/each time)Accuracy: 5%Starting Wind Speed: 0.7m/sWorking Temperature: -30-65 DegreeCPackage List1 x With Cable Wind Cup Main Unit 1 x USB Cable 1 x Fixed Holder 1 x Fixed Bracket Accessories 5 x Screw 5 x Nut