Specifications: Model APS Air pressure sensing switch with fixed set point Mounting position: Mount with the diaphragm in any vertical plane to obtain a specified operating set point. Setpoint: Fixed to operate on pressure rise at 0.05±0.02”w.c. (1.27±0.508 mm) Switching differential (approximate) : 0.02±0.01”w.c. (0.508±0.254 mm w.c.) Measured media: Air, or combustion byproducts that will not degrade silicone. Maximum pressure : 1/2 psi (0.03 bar) Operating temperature range : -40°F to 180°F (-40.0°C to 82.2°C) Life: 100,00 cycles minimum at 1/2 psi maximum pressure each cycle and at maximum rated electrical load. Electrical rating: 300 VA pilot duty at 155 to 277 VAC, 15 amps noninductive to 277 VAC, 60 Hz. Contact arrangement: SPST-NO Electrical connections: Screw-type terminals. Sample line connector: Barbed 1/8” - 1/4” slip-on connector accepts flexible tubing. Shipping weight: 1.2 lbs. Approvals: UL, CSA Functional specifications Integral recycling delay timer with 10 minutes ON, 15 seconds OFF cycle, 120 volt input. Power : 120 VAC +10%/-15%, 50/60 Hz. Timing range : 10 minutes (600 seconds) ±10% Output : SPST NO relay rated for 8 amps (resistive) @ 250 VAC or 1/8 hp @ 250 VAC. Electrical connections : Terminal block with clamp-type screw connector suitable for 12-26 AWG. Temperature range : -40°F to 140°F (-40°C to 60°C). FREE SHIPPING