Vehicle Loop Detector are used in sensing the vehicle movement Product Category? Vehicle Loop Sensor Product Details? Power Supply: 220V AC±10% Rated power: 4.5W Operating Temperature: -30?to 70? Operating Frequency:20KHz to 170KHz Sensitivity: 0?9levels Relay Output: DC24V/3A Installation: DIN lead rail Dimensions: 100*70*118mm Reaction Time: 20ms