The Vehicle Loop Detector is designed to detect the presence and passage of vehicles. It features a reset switch that allows manual resetting during commissioning and testing, enabling the detector to re-tune the sensing loop for optimal vehicle detection. Selectable time settings allow the relay to be energized for either 1 second or 0.5 seconds. The relay can be configured to activate upon vehicle detection or when a vehicle exits the loop. Sensitivity boost function sets the detection level to maximum sensitivity, helping prevent missed detections of high-bed vehicles. Switch-selectable sensitivity provides four levels for flexible configuration to suit various installation conditions. Switch-selectable frequency offers four options to minimize interference between adjacent loops. A filter option introduces a delay between vehicle detection and relay activation, which helps prevent false triggers from small or fast-moving objects. The permanent presence feature ensures continuous detection signal when a vehicle remains parked over the loop for extended periods. Specifications: Supply voltage: 220V AC Power: 4.5VA Output relays: 240V/5A Operating temperature: -20°C to 65°C Storage temperature: -40°C to 85°C Frequency range: 20 kHz to 170 kHz Temperature compensation: 50°C/h Reaction time: 10ms Signal holding time: Unlimited Sensitivity: Higher: 0.02%, High: 0.05%, Low: 0.1%, Lower: 0.5% Loop inductance: Loop plus connection wiring: 50μH to 1000μH, optimal range 100μH to 300μH Loop connection wiring: Up to 200 meters, resistance less than 80Ω, at least 20 strands per meter Relative humidity: Less than 90%, no condensation Weight: 283g Color: Black Material: Plastic + metal Package Contents: 1 x Vehicle Loop Detector Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement tolerances may vary by +/- 1-3cm.