Harman Wireless Room Sensor Thermostat TC Models, Part# 3-20-777556

SKU 3-20-777556
MPN 3-20-777556
  • For use with all TC Controllers
  • Ships FREE with orders over $199
  • Express Shipping available!
  • 30-Day Hassle Free Returns!
  • 90 Day Warranty On All Items
  • Buy with confidence-Buy with the experts!
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HARMAN WIRELESS ROOM SENSOR THERMOSTAT Fits Models:  Absolute43, Absolute63, Allure50, XXV-TC, and Accentra Insert 52i-TC

Harman Wireless Room Sensor Thermostat allows for wireless temperature control anywhere in your home

Wireless design, simple installation. Batteries Inlcuded.

Genuine Harman OEM Replacement Part

Made in the USA

Replacement For Part Number :
  • 3-20-777556

Compatible Models


  • Absolute 43-C
  • Absolute 63
  • Accentra 52i TC
  • Allure 50
  • XXV TC



Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Items must be used in accordance with the manufacturers guidelines to qualify for warranty replacement. Please be advised that warranty claims for these parts may take up to 4 weeks for processing, and customers must cover shipping.

Shipping Info

When Will My Order Ship

All orders are typically processed within 24 hours of receiving payment and are shipped from us same day if placed before our shipping cutoff time (Monday - Friday: 1PM, Saturday: 10AM, Sunday: No Shipping), orders placed after our cutoff time are shipped the next morning.

How Does Free Shipping Work?

Most orders over $199 qualify for free shipping! Orders which ship for free are shipped with either USPS or UPS based on our discretion. If you are using a PO box, free shipping orders will always go USPS.

Is Expedited Shipping Available?

We offer both overnight and two day air shipping services for all orders placed within the Continental United States. For information on shipping cut-off times, go to our shipping page.

Do You Ship To Canada?

We ship to Canada! We estimate USPS to take 4-10 days once receiving your package from us. We do not offer expedited shipping of any kind to Canada. Please allow an extra 2-5 days for all shipments to Canada. Free shipping is not available to Canada.

Do You Ship To Alaska Or Hawii?

We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.

Do You Ship Outside The US Or Canada?

Unfortunately, at this time we do not offer international shipping other than to Canada.

If you wish to calculate shipping for an item which does not qualify for free shipping, or if you would like the cost to expedite your order, please do the following. Add the item you want to order to your cart and click here to be taken to the cart page where you can enter your country, state / province, and zip code for an estimate.

Shipping Time Estimations

For information on shipping time estimations, see either the Shipping Information & Transit Times on the cart page, or go to our shipping page.

Read More About Our Shipping Information

Customer Reviews

Based on 2 reviews
Harman wireless room sensor

Would highly recommend the sensor!
Stove runs more efficiently, Should be standard equipment on Harman stoves!!

Exactly what I was working for

Timely shipment and was exactly what I was looking for! Thank you!


Ask a Question
  • Will this part work with my 52i insert

    This part will work with any Harman model (including the 52i) that uses a digital control panel

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