🌬️ Keep your engine cool, your ride smarter — control temps like a pro!
The Flex-A-Lite Adjustable Temperature Controller (Model 31147) is a wired, manual dial fan controller designed for automotive engine cooling. It allows precise fan activation temperature adjustment from 180°F to 240°F, includes a built-in 20-amp relay eliminating external relay needs, and comes with all necessary installation components. Compatible with 12V systems and backed by a 1-year warranty, it’s engineered for reliable, customizable temperature management.
| Brand | Flex-a-lite |
| Model Name | 31147 |
| Controller Type | Manual Dial |
| Special Feature | Manual Temperature Adjustment, Built-in Relay Function |
| Color | Silver |
| Specific Uses For Product | Car engine temperature maintenance |
| Temperature Control Type | manual |
| Connectivity Technology | Wired |
| Included Components | Radiator probe, wiring harness, wiring, electrical terminals, and other possible items not explicitly mentioned |
| Power Source | DC power supply |
| Voltage | 12 Volts (DC) |
| Shape | Rectangular |
| Display Type | analog |
| Control Type | Dial Control |
| Control Method | Touch |
| Mounting Type | Surface Mount |
| Style | functional |
| Backlight | No |
| Wattage | 2.4E+2 |
| UPC | 088657311472 088657802352 |
| Global Trade Identification Number | 00088657802352, 00088657311472 |
| Manufacturer | Flexalite |
| Part Number | 31147 |
| Item Weight | 4.8 ounces |
| Product Dimensions | 6 x 10 x 5 inches |
| Country of Origin | USA |
| Item model number | 31147 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Special Features | Manual Temperature Adjustment, Built-in Relay Function |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Warranty, parts: parts, warranty, labor: authorized dealer - full manufacturer's warranty applies. |
T**T
Works great. easy to install & set up
Works great. easy to install & set up.To get it close to your nornmal temp set the probe into hot water. When it is near your operating temp set it to where the fan just kicks on. Of course you need to wire the fan up. Once installed in the car it is much easier to fine tune.
J**Z
Works great. It's hooked up to a stock aux fan ...
Works great. It's hooked up to a stock aux fan on a 04 dakota and it does what it's suppose to do. Comes on for a minute or 2 and shuts back down. Its been on for about 2 weeks now and I'm happy with it
T**B
Does the job
Does exactly as it was supposed to. I could only wish for a better method to fasten the probe in the radiator. I put a vacuum line cap, stuck on with silicone to make sure it didn’t fall out under vibration.
B**E
So far so good
Have several cheaper alternatives already fail, so I paid a little extra money to see how this would work. Six months later still going strong. Would mount the radiator probe at the top of the radiator for a more accurate engine core temperature reading.
A**E
Good add on with a fan
I got this to go with a flex a lite 16 inch fan for my RV. This setup performed exactly as I hoped it would. It seems to be a well-made product to me. The adjustment knowb let me set it just exactly where I needed it to be.
D**Y
Simple. Effective. Perfect
Super easy to install, use and adjust. Keeps my ride cool and on hot days I crank it down and the fan kicks on a bit earlier to help keep temperatures in order.
R**O
disapointed
as soon as the car came up to normal operating temperature the fan kicked in and would not shut off. I put the setting on the lowest possible setting and it still came on and would not shut the fan off. The fan I installed is an axillary fan and i wanted it to come on when the temp went above the normal temp. IE. sitting idle in traffic etc. i was completely disappointed and removed the switch.
A**R
Not the best
Very simple to install but I wasn't too happy with the temp adjustment, I turned it all the way down and the fan wouldn't kick on until the engine was super hot. Might have wired it up wrong. I've used other thermostat controllers and they've worked.
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