Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.

Honeywell - YERM5220R8321 RedLINK Equipment Remote Module and VisionPRO Thermostat

Item: YERM5220R8321
MFR: YERM5220R8321/U

Store Inventory

Sign in to see real-time inventory at the stores closest to you.
What’s the price?
Sign in for pricing.

About This Product

Product Info


The Honeywell ERM is like a new cordless tool in your toolbox. Pull it out whenever it's too costly or time-consuming to run wires from a condensing unit or boiler to control devices. There are fewer holes to drill and wires to run. Just faster, easier installation that gives you more profit per job. Make the Honeywell ERM your go-to choice for fast, easy equipment installation.


• Wireless RedLink™ communication between condensing unit/compressor or boiler and thermostat.
• Eliminates the need to run additional wires to your equipment, for example, during a heat pump upgrade.
• Suitable for outdoor use.
• Temperature sensor terminals for outdoor temp sensors or indoor freeze protection.
• LEDs for easy installation checkout.
• May reduce damage to homes since wiring/drilling is eliminated.


Weight6 Pounds (lbs)
Width7.063 Inches (In)
Height7.125 Inches (In)
Country of OriginMEX
Length4.563 Inches (In)
ColorGray, White
Cycle/Hertz60 Hz
Prop 65No
Stages Cool2
Stages Heat2
Terminal DesignationsERM-J, R, C, Y, Y2, O/B, D, L, S1, S1
Voltage24 VAC
Warranty OfferedYes


Equipment Part List