Check the listing for details. Diablo DSP-7LP Micro Vehicle Loop Detector 9-30 VAC/DC Low Current Draw. Condition: New. Listed at 95.50 USD. Diablo DSP-7LP Micro Vehicle Loop Detector 9-30 VAC/DC Low Current Draw 9 – 30 VAC/DCLow current drawAuto-tune sensitivity and frequencyHardwired detectorFeatures Loop Size - Works on any in-ground inductive loop from 20 to 1200 μH. Indicators - Separate Power and Detect LED’s. The green Power LED will wink continuously once per second under normal operation. The red Detect LED will turn on solid for a vehicle. Sensitivity - Automatic - compensates for large loops and large lead-ins. Output Ratings - Single output, 1 amp relay at 30 VDC Resistive - The relay common, NO, and NC contacts are available. Loop Failure - The green power indicator flashes twice per second if the loop circuit is open and 10 times per second if the loop circuit is shorted. This detector operates in the fail safe mode and will output a “Detect” for either of these loop failure conditions. This “Fail safe” detector should be used on “safety” loops. Power - 10 to 30 Volts AC or DC. Approximately 1 mA (no car and all loop sizes) and less than 25 mA with a car on the loop or while in a “Fail” condition Size - Height: 1.52” Width: 2.9” Depth: 1.56” Connector - Removable 7-pin terminal block. Pin assignments are shown below - from left to right: 1 - Relay (NC) (opens for detect) 2 - Relay Common 3 - Relay (NO) (closes for detect) 4 - Power Common 5 - Power in (10 to 30 Volts AC or +DC) 6 - Loop 7 - Loop Operating Temperature - -35°F to 165°F (-37°C to 74°C)