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Mechanical Millivolt Thermostat (48-86F)
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200-501 has been discontinued
Discontinued April 6, 2017
This product was discontinued by the manufacturer.
MANUALS (1)
Direct Replacement:
Product Highlights
–
Non-Programmable
24V, mV
Round
48°F to 86°F
Description
–
The 200 Series Thermostats are decorator designed and engineered
for outstanding performance. All models feature Uni-Line’s famous
sealed-in-glass switch which requires NO LEVELING AND OPTIMUM
PROTECTION FROM SWITCH CONTAMINATION.
Models are available for 24 volt heating or cooling, millivolt heating,
2- or 3-wire zone, and with energy saving heating or cooling ranges.
A decorating wall plate is included with all models to cover old thermostat
mounting marks.
Specs
–
| Application: | Millivolt |
|---|---|
| Programmability: | Non-Programmable |
| User Interface: | Mechanical |
| Mount: | Round |
| Voltage: | 24V mV |
| Temperature Range (F): | 48°F to 86°F |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
Product Reviews
4.5 out of 24 reviews
91% would recommend this product
5 star
75%
4 star
8%
3 star
8%
2 star
8%
1 star
0%
Most Liked Positive Review
Simple and safe
I use this to control my Jotul gas burning stove that is equipped with a 750 millivolt thermopile. It was easy to install, and does not need any other outside electrical source. It doesn't need to be perfectly level either. This unit can only be used for heating, not heating and cooling.
VS
Most Liked Negative Review
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Not Very Sensitive
Bought for a NG stove (Hearthstone direct vent) with a millivolt system. Temperature swing was 5 degrees between coming on and going off.
Purchased a White Rodgers 1E78-140 non-programmable thermostat (works with millivolt systems; requires 2 AAA batteries included) and that works perfectly. Only a 1 degree swing from on to off. Love it!!!
Showing 1-10 of 24 reviews
simple, no battries required
gotta love a device that does not need any batteries or power to make it work, simple is sometimes best.
geodon
south central wisconsin
9 years ago
Verified Buyer
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A sign of the times
I had been familiar with this thermostat years ago, and on the strength of past experience, ordered another. Unfortunately, these units are now made in Mexico, and quality control has suffered. This new unit was woefully inaccurate, and I had to return it.
Greybird 7
Maine
10 years ago
Verified Buyer
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Simple, easy to read, and easy to install.
See above
alripeau
Fall river, MA
10 years ago
Verified Buyer
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It works !
This was used to replace an erratic thermostat and this one works like the other one should have. It was used on a gas fireplace insert. I recommend it.
Robear
Carson city, NV
10 years ago
Verified Buyer
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Just what I needed
I couldn't find this simple type of therostate locally but found it on the web..thanks.
Heater repair guy
San Anselmo, CA
10 years ago
Verified Buyer
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T-stat is perfect for gas fire place
Good match for gas stove needing milivolt.
Ken
Voorheesville, NY
10 years ago
Verified Buyer
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Good dependable function for a great price
This was a replacement for a greenhouse heater. Easy to install. Nothing fancy....it just performs its basic function but does it well. Very dependable and price was reasonable.
Ron
Fort Smith AR
11 years ago
Verified Buyer
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I would buy this product over and over
I needed to find a reasonably priced thermostat to use with an older propane wall heater, most places no longer carry one. Found some that didn't have all the features I was wanting. This one had these, along with a great price. It works great. I highly recommend it.
Picky Carl
Thornton, CO
11 years ago
Verified Buyer
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Not Very Sensitive
Bought for a NG stove (Hearthstone direct vent) with a millivolt system. Temperature swing was 5 degrees between coming on and going off.
Purchased a White Rodgers 1E78-140 non-programmable thermostat (works with millivolt systems; requires 2 AAA batteries included) and that works perfectly. Only a 1 degree swing from on to off. Love it!!!
Dave
Glen Gardner, NJ
11 years ago
Verified Buyer
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Would buy from Supply House again.
Works great.
Mikey
New York
11 years ago
Verified Buyer
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Product Q&A
3 Questions3 Questions
Q: Is the Robertshaw 200-501 compatible with the 250, 500, and 750 millivolt controls typically found on propane gas heaters?
Asked by Greyjay1 12 years ago
Add your answer
-
I have a millivolt propane gas heater. I believe it’s voltage 750 millivolts. I tried two other thermostats that claimed they were millivolt compatible, but they were problematic. I finally found this Robertshaw thermostat about three years ago, and it has worked perfectly ever since.
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Q: The numbers on the bottom, is that the temperature of the house?
Asked by Hallbbb 14 years ago
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Verified Reply- PexSupply StaffThe numbers on the bottom of the thermostat's display reflect the actual room temperature, while the numbers on the top allow you to use the red arrow to adjust the set point.
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Q: I have a studio apartment with a robertshaw 200-501 millivolt mechanical thermostat, but i also have a digital thermometer too. My Thermometer says 74.1, but my thermostat dial says approximately 72.5. The thermostat is set to about 72.5. The themostat has no problem getting the set temperature to match its temperature reading but it doesnt match the temperature on my digital thermometer. So how do i get the thermostat gauge to display the correct temperature in my apartment?
Asked by 16 years ago
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Verified Reply- PexSupply StaffYou would need to replace your mechanical thermostat with a digital unit to correct this.
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