This Stop light switch is for heavy-duty vehicles. It contains port size measurements as follow: 1/4-18 NPT and it offers pressure normally open at 0 PSI. Single pole, two terminal in design, it contains silver contacts, snap action design to increase switch life and is tested at one million cycles at 30 AMPS to ensure quality.*Port size measurements as follow: 1/4-18 NPT*Pressure normally open at 0 PSI*Single pole, two terminal in design*Contains silver contacts, snap action design
 
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