Function: 1. Power Control Function: After the alarm is triggered, turning off the power allows control of connected equipment; the fan speed automatically adjusts to the preset level. 2. Three-Cup Anemometer: Features a three-cup design for 360-degree wind speed measurement with high accuracy. 3. Wide Measurement Range: Offers broad wind speed detection range and strong anti-interference capability, including electromagnetic interference protection. 4. Power Failure Memory: Equipped with a CMOS-based digital circuit that retains settings during power loss, saving time and energy. 5. Display Functions: During normal operation, the display shows: current real-time wind speed, preset alarm wind speed, and maximum wind speed recorded within the day. Specification: Item Type: Tower Crane Anemometer Weight: 554 g (19.5 oz) Power Supply: USB 5V Host Dimensions: 115 × 60 × 30 mm (4.5 × 2.4 × 1.2 in) Mounting Hole (Main Unit): 15 × 39 mm (0.6 × 1.5 in) Wind Vane Mounting Hole: 4 cm (1.6 in) Cable Length: 8 m (26.2 ft) Application: Wind speed monitoring in power plants and weather stations Wind Speed Accuracy: ±0.3 m/s Adjustable Alarm Threshold: Level 2–12 (in 0.5 increments) Overall Accuracy: ±5% Start-up Wind Speed: 0.7 m/s Operating Temperature: -30°C to +65°C Material: Plastic How to Use: Connect directly via USB for immediate operation. Package Includes: 1 × Wind Speed Alarm Meter with Cable 1 × USB Cable 1 × Permanent Mounting Bracket 1 × Auxiliary Mounting Kit 5 × Screws 5 × Nuts