• Stage-Mod-IS                Indoor (Water) Temperature Sensor c/w 3" immersion
                                      well and enclosure
• Stage-Mod-OS              Outdoor Temperature Sensor c/w enclosure
• Stage-Mod-SFM            24 Vac, 40Va control transformer
• Stage-Mod Manual

• Stage-Mod-SENSOR      Temperature Sensor Element
• Stage-Mod-OSW            Outdoor Temperature Sensor in a sealed
                                       weatherproof enclosure
• Stage-Mod-LOCK           Control parameter editing lock - mounts on StageMod
• Stage-Mod-KEY             Control parameter editing key
• Stage-Mod-CLK              Night Setback 7-Day programmable time clock
• Stage-Mod-FLOW          System pump Flow indication switch
• Stage-Mod-XRF              24 Vac, 40Va control transformer