Resideo - Honeywell Home YTHM5421R1010 Heat Pump Thermostat Interface Module Kit

Heat Pump Thermostat Interface Module Kit; Item Interface Module Kit; Size 4-13/16 Inch Width x 1-5/8 Inch Depth x 9-5/16 Inch Height; Terminal Designation R, RC, RH, C, U1, U2, A, B, C, D; Mounting Type Vertical; Color/Finish Gray; Used On Item Programmable/2-Wire IAQ Thermostat, Heat Pump; Used On Model/Brand VisionPRO, Prestige; Used On Item Part No THX9421R5021; Voltage Rating 18 to 30 Volt AC 50/60 Hertz; Current Rating 1 Amp (Cool/Heat), 0.5 Amp (Fan); Stage up to 4 Heat/2 Cool Heat Pump or up to 3 Heat/2 Cool Conventional; Temperature Rating -40 to 165 Deg F; Humidity 5 to 95 Percent RH (Non-Condensing); Application Gas, Oil, Electric, Heat Pump, Forced Warm Air, Hot Water, Steam or Gravity