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Harbor Freight is selling this non-contact thermometer for only $8 with coupon until December 20th, 2008.  Unless you’re the world’s biggest cheap-ass, there’s no excuse not to get one to play with.

Cen-Tech’s non-contact pocket thermometer reads temperatures from -27° to 230°F or -33° to 110°C.  Get readings in less than one second to quickly locate hot and cold spots.  The thermometer also includes a real-time clock and stopwatch.

The included 3V CR2032 lithium battery provides 40 hours of battery life.

Non-Contact Thermometer [Harbor Freight]
Street Pricing [Google]

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7 Responses to Dealmonger: Non-Contact Thermometer For $8

  1. Andrew says:

    I just bought one of these during a Christmas sale. It actually works pretty well. Kind of fun to play around with.

  2. HammerDrill says:

    Is this an IR Thermomenter? The manual on the HF web site makes to mention of it, but it does have a reference to http://www.zytemp.com and the HF version appears to be the same as the zytemp TN105C which is IR, but the specs do not match up and the fact that it cannot deal with a rapid change in temperature.

  3. jerry vaughn says:

    will not shut off after set clock cen-tech

  4. Ivan says:

    I always wondered, do they work on people?
    can I measure my kids fever from a distance? Hmm, might need to get me one.

  5. Fabian says:

    I have a cool-master temp gun and yes, you can measure a person’s body temp from a distance. It may not be clinically accurate thought. It’s about $28 on amazon and is more value for the dollar if you ask me.

    The thing with this cheap unit for sale is the battery. Button batteries are expensive and I doubt they will last long. It will be dead when you really need it to work.

    Also, get a temp sensor with a laser. A laser really helps know what you are pointing at. You’d be surprised how bad your accuracy can be with these things when you don’t have a laser.

    F.

  6. Zathrus says:

    @Ivan:

    Yes, and no. You can measure body temp, but it’s going to be surface temperature, not internal temp. Not so useful — you’d probably have a surface temp of about 100 degrees F when your internal temp was around 104-106.

    As for checking from a distance — well, certainly not with this one. Most gun-shaped ones have a field of view (FoV) of around 10:1 — so for every 10″ they have a 1″ spot that they’re measuring the temperature of.

    This thing’s FoV is 1:1. Yup, that’s right — try to take the temperature of something a mere 2′ away and it’s taking the average temp of a 2 FOOT diameter circle.

    Spend another $10 and get one worth a darn.

  7. Robert says:

    And beware of shiny, no matter which one you get.

    If you need accuracy, you need to allow for surface finish.

    Look up IR emmissivity if you want to bore yourself to tears.

    Or, if you have a gun already, put electrical tape on something shiny and shoot it up close, on and off the tape. That difference you will see is because of emmissivity.

    Generally not enough to worry about, unless you’re a thermographer.

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