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🌡️ Stay cozy, stay connected — the smart heat upgrade you didn’t know you needed!
The Harman Wireless Room Sensor Thermostat (model 3-20-777556) is a genuine OEM replacement designed for select Harman pellet stoves. Featuring wireless Wi-Fi connectivity, battery-powered operation, and precision temperature control, it offers hassle-free installation and seamless integration to optimize your home heating experience with reliable, automatic adjustments.
| ASIN | B07GJVD4G2 |
| Backlight | Yes |
| Batteries | 2 AAA batteries required. |
| Best Sellers Rank | #427,264 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #575 in HVAC Controls |
| Brand | Harman |
| Color | White |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Remote |
| Control Type | Button Control |
| Controller Type | Push Button, Remote |
| Customer Reviews | 4.7 4.7 out of 5 stars (59) |
| Date First Available | August 16, 2018 |
| Display Type | LED |
| Finish Type | Glossy |
| Included Components | Mounting hardware, Installation instructions |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.3 ounces |
| Item model number | 3-20-777556 |
| Manufacturer | HHT |
| Material | Plastic |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AAA batteries required. |
| Power Source | Battery Powered |
| Product Dimensions | 6 x 2 x 4 inches |
| Shape | Rectangular |
| Special Feature | Temperature Display |
| Specific Uses For Product | Pellet Stove Heating Control |
| Style | Wireless |
| Temperature Control Type | Heating, Automatic |
| UPC | 810004060166 |
D**E
Regulates your heat well.
Works as it should. Easy set up. Pricy, but less than other sellers.
A**R
Harman sensor
It works great
R**T
30 second setup, easy peasy
Installed and connected in less than 30 seconds. Clear instructions provided. The touch screen on our stove is very intuitive anyway. This was pricey but worth it!
A**R
Works great and easy to install .
This was purchase cause the sensor on our Hartman pellet stove was not working correctly after it just ended our warranty , this was recommended and we are so pleased with this purchase . Easy to set up , save us from a service call .
D**D
Easy install
Easy to install, works great. A bit pricey.
K**I
Works great!
This sensor thermostat has been a game changer for how our pellet stove regulates temperatures in our house. We placed it on the opposite side of the house (fairly open concept), and the pellet stove is now able to easily regulate temperatures all day and night! I am also finding that we are using fewer pellets, and the furnace kicks on less frequently!! Win-win!!
A**M
So far, so good
Set up was easy, just wish it wasn't so expensive
A**R
Does what it says.
Much better than the wired sensor. A bit expensive for what it is. Really for the cost of the pellet stove this should be included.
Trustpilot
3 weeks ago
5 days ago