Feature 1Wind Speed Alarm Instrument: Provides alarm function with a matching connection cable to control desired devices and automatically cut off power when wind reaches the set level. 23 Cup Wind Cup: This anemometer adopts a 3 cup wind cup design for 360 degree wind speed measurement with high accuracy. 3Wide Measurement Range: The wind speed meter has a wide measurement range and strong anti interference capability, with built in electromagnetic interference protection. 4Power Failure Memory Function: Utilizes a CMOS chip with power loss memory function, saving time and energy. 5Durable: The anemometer is made of aluminum alloy, ABS material, which is rainproof, dustproof and collision proof.Item Type: Tower Crane Wind Speed MeterMaterial: Aluminum Alloy, ABSWeight: Approx. 676g / 23.8ozPower Supply: USB 5V Input Voltage (Actual Operating Voltage): 220VProduct Size: Approx. 10.8x7.3x3cm / 4.3x2.9x1.2inMounting Aperture Size: Approx. 9.7x5.3cm / 3.8x2.1inWind Cup Mounting Aperture: 4cm / 1.6inWind Cup Cable Length: 8m / 26.2ftSuitable Scenes: Power Plant Wind Speed Measurement, Meteorological Station Wind Class Accuracy: 0.3 Class Accuracy: 5% Startup Wind Speed: 0.7m/S Operating Temperature: -30-65 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Tower Crane Wind Speed Meter1 x Connection Cable1 x Mounting Bracket1 x Mounting Bracket Accessories5 x Screws5 x Nuts1 x USB Cable1 x Wind Cup With Cable