1. The Vehicle Loop Detector is mainly used to detect the existence and passing of vehicles. 2. Reset Switch: The reset switch enables the detector to be manually reset during commissioning and testing. This results in the detector re-tuning the sensing loop and becoming ready for vehicle detection. 3. Selectable Pulse Time: This feature sets the length of time that the pulse relay be energized for 1 Second or 0.5 Seconds. 4. Pulse Relay Selection: The Pulse Relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop. 5. Sensitivity Boost: This feature sets the undetected level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles. 6. Switch Selectable Sensibility: 4 sensitivity setting are available on the switches to allow flexibility in configuration. 7. Switch Selectable Frequency: 4 frequency settings are available to prevent -talk between adjacent loops. 8. Filter Option: This option is used to provide a delay between detection of the vehicle and switching of the output relay. This relay is normally used to prevent false detection of small or fast moving objects. 9. Permanent Presence Option: This feature detection of the vehicle be maintained when the vehicle is parked over the loop for extended periods. 10. Specifications: 11. Supply voltage: 220V AC 12. Power: 4.5VA 13. Output relays: 240V/5A 14. Operating temperature: -20~65 Celsius 15. Storage temperature: -40~85 Celsius 16. Frequency range: 20 kHz to 170 kHz 17. Temperature compensation: 50 Celsius/ h 18. Reaction time: 10ms 19. Signal holding time: Unlimited/limited 20. Sensitivity: Higher:0.02%/high:0.05%/low:0.1%/lower:0.5% 21. Loop inductance: Total loop plus connection wiring: 50μH to 1000μH. perfect is 100μH to 300μH 22. Loop connection wiring: 200 meters long. The total resistance is less than 80hm, twisted at least 20 times per meter 23. Relative humidity: Less than 90% No condensation