This wind speed sensor is a game-changer for your PV system, allowing you to track additional measured values like irradiation and ambient temperature. With its cup anemometer and reed contact, it's designed to provide accurate readings. The sensor has a dimension of 3.35 inches and operates within a temperature range of -20°C to +60°C. It's also IP 54 protected, making it durable and reliable. Dimension 3.35 in Sensor Cup anemometer with reed contact Output signal Rectangle: Low ≤ 0.5V / High ≥ 4.5 V Calibration factor 5.22 Hz = 1 km/h, 18.79 Hz = 1 m/s Threshold 2.5 m/s wind speed Resolution 1 m/s, 1 km/h Tolerance ±5% from 5 m/s upwards Degree of protection IP 54 Permissible ambient temperature -20°C - +60°C Connection cable 2 m Cu cable, exposed ends, ferrules, UV-resistant Max. cable length 30 m