Heat Control Panel (HCP) Stand-Alone Heat Control PanelPSI-Polymer Systems stand-alone heat control panels provide add-on heat control zones when you need the extra capacity. Shown: Six zone panel Back to Controls Summary Product Description Auxiliary heat control supports line refits or expansions. Each heat panel includes: Solid state relays Separate breakers for each zone Up to six (6) discrete temperature control zones Custom Panels available for additional zones