The SJE PumpMaster® WPS is a mechanically-activated, wide-angle float switch providing automatic control in potable water and water applications. It provides direct control of pumps up to 1/2 HP at 120 VAC and 1 HP at 230 VAC or control applications as low as 120 VAC, 100 mA.

It is CSA Certified to meet NSF/ANSI 61 standard for use in potable water and approved for use in tanks of 950L (250 US gallons) in volume or greater per float. It can be wired to work in either pump down (normally open) or pump up (normally closed) applications.