4090 Series 2 Head, 1-Channel Detector w/o Confirmation Lights Model (Standard or Self-Test Model):Self-Test Up to 16 priority groups

Up to 16 priority groups within each signal band shall be definable

Standard and Self-Test)

The model 1790 features a 1/2” female pipe hub mounting base

assign emitter codes

Classes 0-9 and codes 0-999 in each signal band shall be individually identifiable

4090 Series 2 Head, 1-Channel Detector w/o Confirmation Lights Model (Standard or Self-Test Model):Self-Test Up to 16 priority groupsTOMARs 4090 Series Optical Preemption Detectors sense the optical pulses emitted by properly equipped emergency or transit vehicles. Mounted to observe the approaches of an intersection, 4090 Detectors are used with TOMAR 4000 Series Optical Signal Processors to inform the traffic control system of the presence of designated vehicles. Self Test Detector The 4090 x ST detectors incorporate a self test feature for true closed loop detector and wiring