KINTREX IRT0421 Non-Contact Infrared Thermometer with Laser Targeting
- Measurement Range: -76 to 932 °F (-60 to 500 °C)
- Distance to Spot Ratio: 12:1
- Temperature Reading: Current and Maximum Temperature
- Response Time (90%): 1 Second
- Auto Shut-off: 15 Seconds when Idle
Product Description
The IRT0421 Non-Contact Infrared Thermometer with Laser is designed to accurately measure temperature from a distance. Simply pull the trigger and aim the pistol grip thermometer at an object using the laser indicator and the unit will provide an accurate temperature measurement in less than a second. The IRT0421 has an advanced highly accurate infrared sensor with a Distance to Spot Ratio of 12 to 1. It uses two AAA batteries instead of the 9-volt battery commonly found in less capable units. With its low voltage application-specific integrated circuit , battery life is increased by up to 60%. This infrared thermometer provides accurate readings over a broad range of temperatures from -76 to 932 Degrees Fahrenheit (-60 to 500 Degrees Celsius). It displays both the current temperature and maximum temperature on the bright backlit LCD display. Advanced ergonomic design and rugged construction for industrial environments, the IRT0421 comes with a nylon holst… More >>
KINTREX IRT0421 Non-Contact Infrared Thermometer with Laser Targeting

After reading specifications and reviews of similar products in the same general price range. I decided on the Kintrex IRT0421.
I am very pleased with my purchase. This device is very quick to respond and it seems to be quite accurate when used properly. One of the main reasons I chose this infrared thermometer over the Fluke, Raytek or Sears Craftsman was that it uses 2 AAA batteries rather than a 9-volt battery. I’ve had the Kintrex for about a month now and I’m still using the original batteries which show no signs of weakness yet. The display is very easy to read even in a dark room (it’s backlighted) and you can switch from Fahrenheit to Celsius simply by pressing a button.
As far as I’m concerned, you can’t beat the Kintrex for the price.
This is a great product and definitely lives up to its product description. The unit has a solid feel and I don’t have the impression that it is a low quality product. Temperature readings are quick and accurate as far as I can tell. It provides many uses such as confirming the temperature of foods to finding heat sources in your home. It has helped me pinpoint the areas in my house that I am losing precious air-conditioning.
My biggest problem with the thermometer is the laser, the infrared temperature reads from a much larger area than the laser points to and until you get used to the unit you may be confused by the temperature reading for areas at a distance of 4 feet or more away.
But all in all a great product.
I bought it because of the low price & was surprised to find it works just as well as more expensive Fluke thermometers I’ve used in the past. It works quickly, has a good distance to spot ratio and it’s priced just right. I’ve used it for everything from spot temp checks of computer equipment to checking my freezer & my ceiling insulation coverage. I would buy the same one again if it were lost or broken.
Simple to use, no set up required.
Product does NOT have adjustable emissitivity which means it can read higher or lower than the real surface temperature depending on the reflective consistency of the surface being measured.
This product is fine for a quick ball park temperature reading and is great to use to scan across a surface to find any temperature deviation like a wall area.
This is one very handy tool at a nice price.
First, the display is backlit and very readable inside, but just a bit faint outside in bright daylight. It fits the palm of the hand better than other devices belonging to friends I’ve tried, and provides sturdy, dependable, and accurate information indoors.
I bought mine to check for temperature leaks for recaulking and insulating my house, but I am astounded to how useful it is indoors. First, in the kitchen, check that oven temperature or the outside of the loaf of bread you are baking. I bought mine for that, although remember what other writers have said about how large an area you may be measuring relative to the laser pointer.
In your home entertainment cabinet, check the air temperature around your receiver and other gear — you may find out that it’s getting warmer than you want — and you’ll see the consequences of leaving that power on. Same with your PCs — check the output temp of the fans on your laptop. If you want to know if your A/C is working properly, a quick shot up to the output baffle will confirm the temp of the cold air coming out there — no more getting a ladder or stool to hold your hand up to it and guess. Check food temperature in the kitchen, including your freezer or fridg, and make sure you and your family are safe. I am sure there are dozens, if not hundreds of uses for this gadget around your home, workshop, office, and kitchen.