Features: _x000D_ The Vehicle Loop Detector is mainly used to detect the existence and passing of vehicles _x000D_ 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_x000D_ _x000D_ Selectable Pulse Time: This feature sets the length of time that the pulse relay will be energized for 1 Second or 0.5 Seconds _x000D_ Pulse Relay Selection: The Pulse Relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop _x000D_ Sensitivity Boost : This feature sets the undetected level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles _x000D_ _x000D_ Switch Selectable Sensibility: 4 sensitivity setting are available on the switches to allow flexibility in configuration _x000D_ Switch Selectable Frequency: 4 frequency settings are available to prevent cross-talk between adjacent loops_x000D_ _x000D_ 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_x000D_ _x000D_ Permanent Presence Option : This feature ensure detection of the vehicle will be maintained when the vehicle is parked over the loop for extended periods . _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Supply voltage_x000D_ 220VAC_x000D_ _x000D_ Power_x000D_ 4.5VA_x000D_ _x000D_ Output relays_x000D_ 240V/5A_x000D_ _x000D_ Operating temperature_x000D_ -20~65C_x000D_ _x000D_ Storage temperature_x000D_ -40~85C_x000D_ _x000D_ Frequency range_x000D_ 20 kHz to 170 kHz_x000D_ _x000D_ Temperature compensation_x000D_ 50C/ h_x000D_ _x000D_ Reaction time_x000D_ 10ms_x000D_ _x000D_ Signal holding time_x000D_ Unlimited/limited_x000D_ _x000D_ Sensitivity_x000D_ Higher:0.02%_x000D_ high:0.05%_x000D_ low:0.1%_x000D_ lower:0.5%_x000D_ _x000D_ Loop inductance_x000D_ Total loop plus connection wiring:_x000D_ 50H to 1000H. Ideal is 100H to 300H_x000D_ _x000D_ Loop connection wiring_x000D_ 200 meters long. The total resistance is less than 80hm, twisted at least 20 times per meter_x000D_ _x000D_ Relative humidity_x000D_