CEM DT-8810 Noncontact IR Thermometer, retail $44.44 (www.cem-meter.com.cn...)
Manufactured by Shenzhen Everbest Machinery Industry Co., LTD (www.cem-meter.com.cn/)
Last updated 12-30-09

The DT-8810 Noncontact IR Thermometer is a thermometer used to measure the temperature of surfaces without your having to touch them for any reason (too hot, too cold, too many "germs", etc.).

This unit can read in °F and °C, has a temperature range of -4°F (-20°C) to 518°F (270°C), has a laser aimer, and has a backlighted display so that you can read the temperature in subdued lighting or even total darkness.

 Size of product w/hand to show scale SIZE

The DT-8810 Noncontact IR Thermometer is remarkably easy to use. Just install the included 9 volt battery first (see directly below), and THEN you can go take the temperature of that rock.

Aim it at whatever you're taking the temperature of, squeeze the trigger-type switch, and read the temperature on the unit's LCD display.

If you wish to read the temperature in celcius, press & release the blue button marked "°C" below the display, and take the temperature reading again. To go back to farenheit, press & release the "°F" button just above that.

To have the red laser spot come on whenever the trigger is pressed, press and release the red "Laser" button.

To turn the backlight for the LCD screen on, press & release the yellow "Back Light" button.

For all of the above functions except for the backlight & laser aimer, you must squeeze and release the trigger first.

The unit turns itself off ~15 seconds after the trigger is last pulled, so there are no switches to fuss with or forget.

To change the battery (and yes, it really *IS* a "battery" and not a "cell"), turn the unit upside-down (so that the bottom of the "handle" is facing up). You'll see a rectangular battery door. Slide it off, take it to a bridge over deep water (the Golden Gate Bridge would be ideal; however, the Juneau-Douglas Bridge would also suffice here), and throw it over the side so that it goes "blub blub blub" all the way to the bottom of Gastineau Channel with all of the bowling balls that were lobbed over that bridge in the 1950s and 1960s...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Slide the used 9 volt battery out, unclip it from the battery snap, and dispose of or recycle it as you see fit.

Clip a new 9 volt transistor radio battery to the battery snap, orienting the terminals on the battery so that the smaller terminal on the battery snaps into the larger terminal on the battery snap, and vide-versa.

Slide the battery in, orienting it so that the end with the battery snap on it goes in first.

Place the battery door back on, and be done with it.
Aren't you glad that you didn't throw that battery door over the side of the Juneau-Douglas Bridge now?

This is what the Jueau-Douglas Bridge looks like...or what it lookED like anyway before it was replaced in 1976.

And this is what the bridge looks like now.

The following current usage measurements were taken:

5.34mA (quiescent; display on after taking a measurement)
5.66mA (trigger is pulled and a measurement is being taken)
22.59mA (quiescent; backlight activated)
22.91mA (trigger is pulled; backlight is on)
10.73mA (trigger is pulled; laser aimer is activated)
34.76mA (trigger is pulled; both laser aimer and backlight are activated)

This noncontact IR thermometer is meant to measure surface temperatures in a dry area; it is not a flashlight meant to be thrashed, trashed, and abused. So I won't throw it against the wall, stomp on it, try to drown it in the toylet bowl or the cistern, run over it, swing it against the concrete floor of a porch, use a medium claw hammer in order to bash it open to check it for candiosity, fire it from the cannoņata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piņata Central), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoņata (also located at Piņata Central) is only used to shoot piņatas to piņata parties away from picturesque Piņata Island, and Mt. Erupto is an active volcano on Piņata Island {In the episode "Les Saves the Day...Again", Paulie Preztail says "Hey, ever wonder why this park's called 'Mount Erupto' anyway?", then Franklin Fizzlybear says "I think its an old native term. Means 'very safe.'"}), shoot it into the upper atmosphere of Gamalon V
* so that Chairman Songi will call the Enterprise so she can uranate & grumble (piss & moan) about it, send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that flashlights may have inflicted upon them.

So this section of the web page will be ***SIGNIFICANTLY*** more bare than this section of the web page on a page about a flashlight.

Beam photograph on the test target at 12".
Measures 0.40232mW on a laser power meter.

The laser is rated to output less than 1mW,
so this power output value is reasonable.

Beam photograph on a wall at ~10 feet.

Those colored graphics toward the left are my "Viva Piņata" posters, and that clock on the right that looks like a gigantic wristwatch (which you may or may not see) is my Infinity Optics Clock.
You also may or may not be able to see a Digimon plush (Greymon)

Photograph of the unit's display screen with the LED backlighting engaged.

 Spectrographic analysis

Spectrographic analysis of the laser in this thermometer.

 Spectrographic analysis

Same as above; spectrometer's response narrowed to a band between 645nm and 655nm to pinpoint wavelength - which is 648.49nm.

 Spectrographic analysis

Spectrographic analysis of the LCD backlight in this thermometer.
USB2000 spectrometer graciously donated by P.L.

Test unit was purchased on Ebay sometime in late-2003.

Unit was originally purchased to measure the temperature of "wall wart"-type AC adapters; it has since been used to measure temperatures of a lot more than just those things.

Product was made in China.
A product's country of origin really does matter to some people, which is why I published it on this web page.

* From the Star Trek: The Next Generation episode "Final Mission".

UPDATE: 12-30-09
I started a new web page for this thermometer; completing all product photography, spectroscopy, and a good portion of the text before I realised that I had already done a web page for it. So all of that work was for not.



    MANUFACTURER: Shenzhen Everbest Machinery Industry Co., LTD
    PRODUCT TYPE: Noncontact IR thermometer
    LAMP TYPE: Diode laser
    No. OF LAMPS: 1
    BEAM TYPE: Very narrow spot
    SWITCH TYPE: Trigger switch for temp. measurements; pushbuttons for all other functions. Auto power-off.
    CASE MATERIAL: Plastic
    BEZEL: N/A
    BATTERY: 1x 9 volt transistor radio battery
    CURRENT CONSUMPTION: 5.34mA to 34.76mA
    WATER-RESISTANT: Very light splatter-resistance at maximum
    ACCESSORIES: 9v battery, gift box
    SIZE: 159mm H, 79mm W, 57mm D
    WEIGHT: 180g
    WARRANTY: Unknown/TBA


    Product is not designed to emit light, so no "star" rating will be furnished.

CEM DT-8810 Noncontact IR Thermometer * www.cem-meter.com.cn...

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