The HSPS120MPL is a multi-zone, low-temperature integrator panel for radiant heat when zoning by pumps. This panel is designed for Tubing-In Concrete emitters such as Embedded Concrete or Staple Down/Pour Over. It features Primary/Secondary plumbing, an expansion tank, a clear y-strainer, supply and return pressure/temperature gauges, and other components necessary to ensure your system runs smoothly. This panel requires an additional Zoning By Pumps-Zone Panel.