activation range is 4" (100mm) from sensor lens

the cap is 3-15/16 inches in length

Speakman SM-5060 SentinelProThermostatic/Pressure Balance Valve with Lever Handle

KIT -FREEZE RESISTANT

which is perfect for hanging dry washcloths to keep them within easy reach or wet washcloths for drying

Marathon Motors 10 HP, General Purpose Motor, 3-Phase, 3525 Nameplate RPM, 230/460 Voltage, 213T Frame - 213TTDBD6001 Nominal Size-40" X 1.5" activation range is 4" (100mm)Designed for mechanical loads, and for hard to start applications such as conveyors, belt driven equipment, machine tools, and reciprocating pumps, this general purpose motor helps keep equipment moving. It features an open dripproof motor enclosure design.