Honeywell Vaporstat® Controller, 0 to 4 psi Control Range, SPDT Switch, Breaks RB Makes RW, 2 to 16 oz/sq-in Differential, 1/4 in NPT, Gray, 4-1/2 in W x 4-1/2 in D x 5-1/8 in H.
Clear plastic cover allows observation of the pressure settingsMain or high pressure-1/4 in NPT internal thread or surface mount through back of caseGround screw terminal-35 to 150 F ambient temperatureScrew terminals electrical connectionsContact ratings: 120 VAC switch contact- 8 AFL, 48 ALR, 10 A resistive; 240 VAC switch contact- 5.1 AFL, 30.6 ALR, 5 A resistiveAuto recycle switch operation15 psi surge pressure