KETOTEK Digital Thermometer Temperature Meter Gauge Waterproof Sensor Probe Aquarium Car PC case Power Bank Temp Meter Celsius/Fahrenheit LCD Display °C/°F PC MOD (Digital Thermometer)

This KEOTEK Digital thermometer was soft and on the eyes to look at day and night.. An excellent item for use on a car dashboard to monitor engine temperature. If the sensor lead is too short, ordinary speaker wire can be used to lengthen it. The sensor lead is just regular, very thin, about 22 gauge wire. I would suggest cutting the sensor lead a few inches outside of the sensor housing to lengthen the lead. The sensor is soldered on two tiny tabs on the PC board and the new lead can be soldered ther in place of the original. I did that but If a person is not skilled enough to do that then just add on to the existing wire externally. Saves time prying open the device housing and tearing two small wires from the backlite main LED. Accuracy is excellent. If a person needs beater accuracy then he'll have to pay more for a lab grade temp measuring devices. All in all the KEOTEK A great little device and sold and a lot of value for an excellent temp gauge sold at low price .

I put this on my pwm controller for my trolling motor to monitor the temperature of the board. I checked it with other temp probes and it's very accurate. Very nice and crisp display. I have two issues with it, that are small. Not water resistant and the screen is small and I struggle to see the numbers from 4 feet away. Other than that, useful and accurate

I wanted to be able to see the temperature in the output side of our HVAC air handler. I connected this to an AC 24v->DC 12v converter and then powered the converter from the 24v "fan" line of the HVAC blower. Since the device uses less than half a watt, it doesn't create any additional load issues for the HVAC transformer when it's running. This turns on the temperature display only when the HVAC is running in either heat or cool mode , and the sensor appears to accurately pick up the air temperature in the output side plenum. I simply poked a small hole in the side of the foam-board plenum above the air handler and inserted the probe, then caulked the opening. When I compared this sensor to another temperature gauge, it was within 1 degree F, so I consider it to be working properly. I've actually ordered a second one to insert in the supply side plenum so I can easily measure the temperature delta for the system at any time, whether it's in heat mode or cool mode.

VERY accurate! My 2015 F-150 has an aftermarket head unit so there’s ZERO temp display. I’ll be installing this as my alternative. The picture is my “bench test” before install. And that’s a 50’ reel of wire too!

Simple, cheap. Seems reasonably accurate. There's a jumper at the back you pull off to switch the temperature scale to Fahrenheit. It's really bright so you might want a plan for covering it up. Molex wires are colored - yech - but those usually get covered up anyway. Thermistor wire is long. Nice little gadget.