The Vehicle Loop Detector is mainly used to detect the existence and passing of vehicles;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<br> Selectable Pulse Time: This feature sets the length of time that the pulse relay be energized for 1 Second or 0.5 Seconds;Pulse Relay Selection: The Pulse Relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop<br> Sensitivity Boost : This feature sets the undetected level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles<br> Switch Selectable Sensibility: 4 sensitivity setting are available on the switches to allow flexibility in configuration;Switch Selectable Frequency: 4 frequency settings are available to prevent -talk between adjacent loops<br> 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;Permanent Presence Option : This feature detection of the vehicle be maintained when the vehicle is parked over the loop for extended periods.<br> Specifications:<br> Supply voltage:220V AC<br> Power:4.5VA<br> Output relays:240V/5A<br> Operating temperature:-20~65 Celsius<br> Storage temperature:-40~85 Celsius<br> Frequency range:20 kHz to 170 kHz<br> Temperature compensation:50 Celsius/ h<br> Reaction time:10ms<br> Signal holding time:Unlimited/limited<br> Sensitivity:Higher:0.02%/high:0.05%/low:0.1%/lower:0.5%<br> Loop inductance:Total loop plus connection wiring:<br> 50μH to 1000μH. perfect is 100μH to 300μH<br> Loop connection wiring:200 meters long. The total resistance is less than 80hm, twisted at least20 times per meter<br> Relative humidity:Less than 90%No condensation<b