GVD301 vehicle loop detector Type: single channel Supply Voltage: 220V AC±10% Sensing range:20-1500µH Sensitivity: 0.02%-0.2% (7 degrees adjustable) Response time: 50ms Frequency: 2 degree adjustable, 15-120khz Output: 2 output relays (5A/AC230V) Relay 1: presence relay; relay 2: pulse/fault relay; CH1: presence relay; CH2: presence relay Working mode: Model: presence & pulse relay output; Model 2: presence & fault relay output Presence mode: Limited presence/permanent presence Pulse mode: pulse entry/ pulse exit; Pulse output time: pulse entry 200ms, pulse exit 200ms Presence output time: 30mins limited presence/permanent presence; Indicator: red: power, green: status indicator; Internal protection: loop isolation transformer, voltage-regulator tube, voltage dependent thermistance; Temperature:-40—80 centigrade
