The genuine OEM Honeywell YTHX9421R5051 Prestige IAQ Thermostat Kit includes a thermostat, equipment interface module, and two duct sensors.
Honeywell Total Home Comfort System Compatible Model/Part Numbers:
- YTHX9421R5051, YTHX9421R5051/U
- THX9421R5013, THM5421R1013
- C7735A1000
Honeywell YTHX9421R5051/U is also known as:
- Honeywell YTHX9421R5051 Prestige IAQ Comfort System Kit (Includes Thermostat, EIM & 2 Duct Sensors).
- Honeywell YTHX9421R5051 Prestige IAQ 2.0 Thermostat Kit.
- Honeywell YTHX9421R5051 Prestige IAQ 2.0 HD 2-Wire Comfort System Kit, RedLINK Enabled.
- Honeywell Prestige IAQ Comfort System - YTHX9421R5051.
- Honeywell YTHX9421R5051 Prestige IAQ 2, Programmable Commercial IAQ Thermostat Kit, 7 Day, Multi-Stage, RedLINK Enabled.
