IN.XM-1-8-IR-PA-1 IN.THERM Intelligent remote water heating system designed to be totally maintenance free. Separated from pack, in.therm is an intelligent 4kw remote heater that integrates electronics in its power box. It includes a built-in temperature probe and a new water flow detection feature that eliminates the need of a pressure switch. In.therm controls multiple power levels on a single element extending its lifetime by heating a high power only when needed. With no moving parts and no adjustments, in.therm is hassle free and defines new levels of reliability. Heater must be installed with access box on top Power Cord Length 48� Communication Cable 48� Minimum Flow rate is 18 GPM