will this work with a 750 mV system?

I had this thermostat installed in one of my rental units. It worked great for about 1 year. My renter complained of the heat not coming on at the agreed upon temperature set point (72 degrees F). My renter would increase the set point and the heater would then come on. After investigating the situation, I discovered smoke had contaminated the thermostat contacts. After cleaning the contacts the thermostat would function as designed until smoke contaminated the contacts again. I installed a thermostat having sealed contacts which solved the problem. So, bottom line, yes this thermostat will work on a 750 mv system. However, if this thermostat operates in a contaminated environment be prepared to clean the contacts periodically.

I have 3 wires,This thermostat has only connections for 2 wires.Can I still use it?

This will depend on your situation. If you are just trying to use it for turning on and off a heat source, then it should work just fine. Follow the instructions carefully. Even though you have 3 wires, I'm guessing one of the 3 is not being used. Follow the wire to the other end and see if all 3 wires are hooked up. If there are only 2 hooked up, those same 2 wires will be what you use at the stat. The stat is just like a light switch, just lower voltage. Power will come from your transformer, through the stat, then to the device control you want to turn on. If you have a unique situation and need more help, you can take some pictures and describe your application and send them to me at samoore@parker.com and I will do my best to help you out.

is this a 2 wire connection?

yes 2 wire, but be careful...no off switch even though picture may show one.

Where to set adjustment lever for a lp gas fireplace? i tried 0.4 (factory setting / gas <90% eff) and fireplace had lower flame than before.

this unit only activates a contact that is activating buy the temp that the setting is placed at, it does not control the amount of gas at your fireplace, or how the flame is burning

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Honeywell Home CT30A1005 Non-Programmable Mechanical Thermostat, White | CT30A1005

Q: Where to set adjustment lever for a lp gas fireplace? i tried 0.4 (factory setting / gas <90% eff) and fireplace had lower flame than before.

this unit only activates a contact that is activating buy the temp that the setting is placed at, it does not control the amount of gas at your fireplace, or how the flame is burning

Product ID: 339086554

Details

Brand
Honeywell Home
Controller type
Hand Control
Model name
CT30A1005
Product dimensions
2.2D x 7.9W x
Special features
Heat Only

🔥Heat-only precision

⚙️Bimetal sensor tech

🛠️Simple manual dial

44306CFA

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Description

🔥 Keep it simple, stay warm — no programming, no hassle!

MERCURY FREE SAFETY - Eco-conscious design without mercury, aligning with your sustainable lifestyle choices.
SLEEK ALMOND FINISH - Contemporary matte almond color blends seamlessly into modern interiors, elevating your workspace or home.
EFFORTLESS HEAT CONTROL - Manual dial lets you adjust temperature with zero fuss—perfect for busy professionals who value simplicity.
RELIABLE BIMETAL SENSOR - Durable temperature sensing technology ensures consistent warmth without digital distractions.
QUICK WALL MOUNT INSTALLATION - Compact 7.9cm square design installs easily, so you can upgrade your comfort without delay.

The Honeywell Home CT30A1005 is a non-programmable, heat-only mechanical thermostat featuring a reliable bimetal temperature sensor and a sleek almond matte finish. Designed for easy wall-mount installation, it offers straightforward manual dial control without mercury, making it a safe and eco-friendly choice for both residential and commercial heating needs.

Specifications

ASIN	B000BQWADS
Additional Features	Heat Only
Backlight	Yes
Best Sellers Rank	#133,890 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #414 in Home Thermostats & Accessories
Brand	Honeywell Home
Brand Name	Honeywell Home
Color	Almond
Colour	Almond
Connectivity Protocol	Ethernet
Connectivity Technology	Wired
Control Method	Touch
Control Type	Dial Control
Controller Type	Hand Control
Controller type	Hand Control
Customer Reviews	4.3 out of 5 stars 2,485 Reviews
Display Type	Manual
Finish Types	Matte
Global Trade Identification Number	00085267262392
Included Components	Thermostat, Decorative Backplate
Item Dimensions D x W x H	2.2D x 7.9W x 7.9H centimeters
Item Type Name	Non-Programmable Mechanical Thermostat
Item Weight	68 g
Manufacturer	Honeywell
Manufacturer Part Number	CT30A1005
Material Type	bimetal
Model Name	CT30A1005
Model Number	CT30A1005/N
Model name	CT30A1005
Mounting Type	Wall Mount
Power Source	Low Voltage Control
Product Style	Contemporary
Product dimensions	2.2D x 7.9W x 7.9H centimeters
Shape	Square
Special features	Heat Only
Specific Uses For Product	Commercial/Residential
Temperature Control Type	Heating
UPC	085267262392
Unit Count	1 Count
Voltage	120 Volts

Reviews

J**L

Very Basic but as Described

It’s a very basic thermostat. It works as expected. I wish it had a thermometer on it but it does not indicate that it has one. I was very easy to install.

28.05.2026

R**Y

don't bother with it

easy to install but it shot the temp inside house to 25 I turned it down until it shut off and it was 19 in the house...... I tried to bump it up a little and it keeps running 1 min turning off then starting 2 min later...... some times it turns off and on so fast the furnace blower motor doesn't have time to kick in......... the old one that needed to be replaced worked much better than this new one........ I called product support and they told me to change the batteries...... it doesn't use batteries lol....... im guessing product quality on the coil that regulates temp....is the problem...... just wish I could find an old fashion mercury switch lol

26.11.2022

M**O

Worked great for my camper.

Very nice and simple replacement for my camper's thermostat. 2 wires to attach and there you go. Functions exactly as I expected.

24.06.2026

A**R

Nope buy a digital one

It’s not digital so it sparks like crazy turning the furnace on and off constantly

6.10.2025

C**A

Easy installation

Easy to install. Works great, it was an immediate upgrade to our living. Turns right on when the temperature dropped.pretty accurate.

13.05.2026

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TrustScore 4.5 | 7,300+ reviews

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44306CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

1 month ago

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Fantastic experience overall. Will recommend to friends and family.

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