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Road Tube Air Switch

This solid-state air switch has been field tested and proven reliable in years of service. It is capable of discerning axles spread of only 2.7' apart passing over the tube at 60 mph (30 counts per second). The switch is housed on a solid Lexan plastic base. It has open face electronics with an 8" long wiring harness. 6 to 15 volts DC.