Za connecting line: power off after alarm can control whether the customer wants to control the equipment, and the wind level to the set level will cut off the power. Three Cup Wind Cup: This anemometer adopts wind speed measurement za using three cup wind cup, wind speed measurement in the range of 360 degrees with high accuracy. Wide measuring range: Alarm wind speed has a wide measuring range and strong anti-interference capability, with electromagnetic anti-interference function. Power failure memory function: The wind speed alarm digital circuit uses CMOS chip with power failure memory function, which saves time and energy. Display: Wind speed in the window displays the current actual wind speed; Set wind level displays the current alarm wind level; Maximum wind level displays the maximum wind level during the day. Base material: aluminum alloy windshield, wear-resistant and durable, rust-resistant, can be used for a long time, suitable for outdoor use. Article type: Tower crane anemometer Weight: 694 g / 24,5 oz Material: aluminium, plastic Power supply: USB 5 V Host size: approx. 11,5 x 6 x 3 cm / 4,5 x 2,4 x 1,2 inches Host mounting hole: approx. 1,5 x 3,9 cm / 0,6 x 1,5 inches Wind shield mounting hole: approx. 4 cm / 1.6 inch Wind shield cable: approx. 8 m / 26,2 feet Applicable scenario: Wind speed measurement in power plant, weather station Wind level accuracy: level 0,3 Wind level setting: 2-12 levels (can be set sequentially at 0.5/ za time) Accuracy: 5% Initial wind speed: 0,7 m/s Working temperature: -30-65C List of packages: 1 x With main unit with cable cover 1 x USB cable 1 x Fixed Handle 1 x akcesoria for fixed brackets 5 x Screw 5 x Nut