The WHITE-RODGERS strap-on hot water control provides control without tapping boiler or draining system. Mounting strap provides any-position mounting without leveling on a 2"- to 6"-dia. pipe. UL Listed and CSA Certified. Item: Strap On Hot Water Control Control Type: High-Limit, Low-Limit, Circulator Switch Type: SPDT Switch Action: Open/Close on Temp. Rise Height (In.): 4-1/16 Width (In.): 3-3/4 Depth (In.): 2-5/16 Contact Rating @ 120V (A): 7.4 Contact Rating @ 240V (A): 3.7 Differential (Deg. F): 10 Temp. Setting Range (F): 100 to 240 Mounting: Surface Mount (Strap-On)