A roadway induction loop senses a vehicle by detecting a change in inductance. The ULT-PLG processes the loop signal and sends the configured output to the connected gate operator or access control system.
The ULT-PLG automatically tunes to the connected loop and compensates for gradual environmental changes. Its isolated loop input and surge-protected circuitry support stable operation across a wide range of loop installations.
Detector Type Single-channel plug-in inductive vehicle loop detector Power 1224 VDC Operating Current 15 mA Sensitivity 10 levels, 09 Loop Frequency 4 settings - Low, Medium-Low, Medium-High, High Loop Inductance 20-2000 µH, Q factor greater than 5 Automatic Tuning At power-up and after frequency count/reset Outputs Presence, Output B and inverted Output B; solid-state open collector Output B Modes Presence, loop fault, pulse on entry, pulse on exit Configuration Options Detect-On-Stop, ASB, Fail Safe/Fail Secure, normal or infinite presence Indicators Green power/loop fault LED and red detect/frequency count LED Operating Temperature -40°F to 180°F (-40°C to 82°C) Relative Humidity 0-95% Dimensions 3.0 × 0.9 × 2.75 in (76 × 22 × 70 mm) Weight 0.15 lb (68 g) Connector 10-pin female See More How the ULT-PLG Detects Vehicles Reliable Signal Processing for Real-World Loop Conditions