MTM Hydro’s Thermostats provide an accurate method of water temperature control within your pressureized line. Be sure to check out additional components for a proper install of the thermostat probe. This kit comes with a 1/2″ access plug for installation into thermostat housing. See image for clarification.See Item #22.0089 for a sheath to protect the probe.See Item #21.0091 for an inline install of the thermostat after the heated coils.P1 Terminal – Brown Wire – Common#1 Terminal – Green Wire to fuel solenoid#2 Terminal – Offset Terminal – Not UsedMax – 4000 PSIMax – 250V with 15AProbe Dimensions – 7mm width X 120mm length WARNINGThis product can expose you to chemicals, including DINP and/or DEHP which is known to the state of California to cause cancer or birth defects or other reproductive harm, go to for more information.The products we sell are not intended for use in potable water systems and are only for industrial non-drinking water applications. Specifications Style: THERMOSTATS