To use, connect the black wire to power and signal ground, the brown wire to 7-24VDC (we used 9V with success) and measure the analog voltage on the blue wire. The voltage will range from 0.4V (0 m/s wind) up to 2.0V (for 32.4m/s wind speed). That’s it! The sensor is rugged, and easy to mount. The cable can easily disconnect with a few twists and has a weatherproof connector.