


🌡️ Stay cool, stay in control — the thermostat pros trust!
The Johnson Controls A19ABA-40C is a robust, single-stage mechanical thermostat featuring environmentally friendly liquid-filled sensing elements. Operating across a wide voltage range (120-277 VAC), it offers precise temperature regulation with fixed or adjustable differentials. Its compact, wall-mount design fits most commercial coolers and HVAC systems, delivering reliable performance and easy installation for professional-grade climate control.
| ASIN | B003U4N74O |
| Backlight | No |
| Best Sellers Rank | #93,880 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #36 in Thermostat Controllers |
| Brand | Johnson Controls |
| Color | Silver |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Remote |
| Control Type | Button Control |
| Controller Type | Push Button |
| Date First Available | June 5, 2010 |
| Display Type | analog |
| Global Trade Identification Number | 10785028083781 |
| Included Components | 1 x Control Unit |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 pounds |
| Item model number | A19ABA-40C |
| Manufacturer | Johnson Controls Inc |
| Material | Alloy Steel |
| Model Name | A19ABA-40C |
| Mounting Type | Wall Mount |
| Power Source | Corded Electric |
| Product Dimensions | 2.3"D x 10.6"W x 2.3"H |
| Shape | rectangular prism |
| Special Feature | Liquid-Filled Sensing Elements, Variety of Sensing Element Styles |
| Style | Compact |
| Temperature Control Type | Manual |
| Voltage | 277 Volts |
T**.
good product
last one last almost 3 years....hopefully this one will last longer.
K**K
good product
Every time when my restaurant walking cooler's thermostat broken, I always bought this one to replaced, it's very easy to put it on, and worked very well, most fit all brands walking cooler, but because my walking cooler was too old, we decided to change a new one, so we don't need extra the thermostat, so I just returned it.
D**K
Junk
D8d not describe from seller well. Did not workmon.my heater.. works for refrigerated units only
J**N
Unit is a Quality part and is calibrated correctly
I tested the control by using a cup of ice with a little bit of water put thermostat bulb into cup of water and cycled thermostat from 30 to 35 degrees and you can hear it click right at 30° mark which means it is calibrated correctly And will hold correct temperature this is the controller you use if you do not want to go digital or have a customer that wants a dependable control with 5° accuracy this is a control you want to use they are dependable and work in a variety of applications
S**R
Genuine Penn control
Control was a genuine Penn control but not as pictured it had a black cover this was not a problem where I was using it.
C**G
Fantastic for freezer to fridge convert
Used on a 7 cubic foot chest freezer to fridge conversion. Fantastic. This easy project allows us to run a fridge on a small solar system at about 300 watts per day. You will have to wire in a power plug. I cut a short drop cord in half, which gave me both ends at the custom lengths I needed.
R**G
it fit
it was what i needed
C**E
Thermostat for cooling
Only works for fan or air conditioner. Not for heat. I ordered it by mistake. Amazon grouped it with other similar thermostats. I tried to reorder same one as before, didn’t look close at it.
P**Y
Used in a cold room application to control a motorized damper and fan. Keeps temperature within 2-3 degrees Farenheit of that selected as system cycles on and off. Actual temperature about 5 degrees higher than where selector on unit is set at. Not a problem as just lower temperature accordingly until desired point is reached. Entirely Mechanical which I like.
K**N
meets expectations
A**R
Standard thermostat works as it suppose to
K**O
I buy this product for my refregiator, It last only 3 months, it broken, it can't stop the compressor, I set the temperure to 7 degree, It reduce the tempeure to minus zero. I suggest the company improve the quality. I bought the product by it's famous brand, and Now, it let me very disappointed.
Trustpilot
2 days ago
2 weeks ago