Blue LED Temperature Display Dual External Sensors

Brand:| Model: ME-TM42123
This seven segment LED temperature meter features two thermal probes for measuring two environments at the same time.
  • Measure two environments at once in °C or °F with included probes
  • Auto-sensing brightness and auto temperature conversion
  • Perfect for the precise monitoring rack closets or fish tanks
  • Wide-range working voltage
  • Includes 8" power cable and temperature probes on 38" long cables
Part # 
Weight: 0.25 lbs.  
List Price$14.99
You Save21%
Your Price
Buy 4-up$11.31
Part # 320-500
Qty:  EA
Available Payment Methods

Product Details

Blue LED Temperature Display Dual External Sensors

These temperature displays offer the ability of measuring two different environments at the same time in Celsius (°C) or Fahrenheit (°F), making it perfect for monitoring the temperature of your equipment closet, computer case, amplifier, fish tank or for comparing two devices under test.

Three 7-segment bright blue LEDs offer great visibility and a wide viewing angle. Additionally, this display features auto-brightness for reduced power consumption in darker settings and offers the ability to change the display from Celsius to Fahrenheit with a wave of a hand. The small display housing footprint opens up application possibilities and since it can run on 12 VDC (8.5 to 26 VDC working voltage), this display is right at home in your car or truck.

Included with this display are two waterproof NTC thermal probes on 38" long cables that offer durability and precision. Cables are UL and CE-certified for low voltage drop. 8" power cable included.

Specifications: • Power requirement: 8.5 to 26 VDC • Current consumption: 36 mA (@ 12 VDC) • Temperature range: -24° C (-11° F) to 125° C (257° F) • Display resolution: 0.1° (@ -9.9° C/F to 99.9° C/F), 1° (@ 100° F and above) • Accuracy: ±1.0° C • Dimensions: 3.11" W x 1.65" H x 0.98" D (79 x 42 x 25 mm).

Blue LED Temperature Display Dual External Sensors
  • BrandParts Express
  • ModelME-TM42123
  • Part Number320-500
  • UPC844632093159
  • Product CategoryPanel Meters
  • Unit of MeasureEA
  • Product Rating
    (5 Reviews)
  • Weight0.25 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Similar Products

View similar products to the Blue LED Temperature Display Dual External Sensors
in the Panel Meters product category.


Blue LED Temperature Display Dual External Sensors
Blue LED Temperature Display Dual External Sensors is rated 4.4 out of 5 by 5.
Rated 3 out of 5 by from Looks nice, but....Received 10 pcs today. On all 10 the power cable was wired backwards -- red on ground, black positive. Fortunately (and contrary to the manual) hooking it up with red on +, black on -, did not let out the magic smoke. The back cover pops off easily and the mating jack is clearly marked V+ and GND. Check your cables first. It's easy to swap the cables in the plug -- a very small screwdriver in the "window" where you can see the metal terminal and you can slide it out.
Date published: 2014-08-08
Rated 5 out of 5 by from Great UnitPerfect unit to monitor two temps at a time. Can be set to alternate between CH1 & 2 automatically through the use of four dip switches. NO INSTRUCTIONS INCLUDED but I found that setting the dips to UP,DOWN,DOWN,UP will alternate between CH1 & CH2 in degrees Fahrenheit. Very bright and CLEAR display.
Date published: 2013-10-28
Rated 5 out of 5 by from Works wellI am using it to monitor refrigerator and freezer temperatures, and it works well, no issues at all (within the limits of the temperature probes anyway!) Great value.
Date published: 2012-01-17
Rated 5 out of 5 by from dual tempThis dual temp. displays are a great value and work nicely.I mounted one in a small experimenter box and it looks nice. It makes a great, easy and cheap project to play around with. I have it setup to read indoor and out doortemps.Terry
Date published: 2012-01-15
Rated 4 out of 5 by from Performs exactly as described at a good priceThis unit offers exactly what it says, so if you are expecting more, then look elsewhere, but if you want a product that does what this one does, then for the price there is no competition. Cheers!
Date published: 2011-11-02
  • 2015-03-27T09:26CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_US, sid_320-500, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Blue LED Temperature Display Dual External Sensors

can the probes wires be extended? and if so will there be any change in the accuracy?

Asked by: horsemanwill

I want measure the Chilled Water Tank temperature 24/7,the probe direct water insertions type or not   

Asked by: ambattsree
Yes these probes can be inserted in water without problem.
Answered by: MattP
Date published: 2015-03-02

does this unit come with a power supply. I see that it is vdc input?

Asked by: Trickedout
These do not include power supplies.
Answered by: MattP
Date published: 2014-10-28

Where are the instructions?

Works with a 'wave of the hand'? How? It does tell the temp. with one lead hooked up, with two, seems to do nothing. have I missed something?
Asked by: Snapshotmusic
If you look to the right on the product page under the price-box, there it is!There are some interesting things: these utilize an NTC temp-probe [Google], more accurate than the old RTD, and more range. Under the cover there is a DIP-switch for user selectable functions, C/F and channel assignment. And if you toggle the auto-dim function by waving your hand, you can also "talk to it!" I got a bunch of these, they're so cool.
Answered by: Fanden
Date published: 2012-02-27
  • 2015-03-27T09:53CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_4
  • loc_en_US, sid_320-500, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational

Customer Projects

Customer projects that include: Blue LED Temperature Display Dual External Sensors

If you built a project using this product, post it in the Parts Express Project Gallery.

Customer Discussions

If you would like to start a discussion about this product, post a thread in the TechTalk Customer Forum.
Get Deals
emailed to you every week.

Be the first to hear about new and exciting products,special pricing and incredible deals!

See This Week's "GET DEALS" Email
Parts Express
725 Pleasant Valley Dr.Springboro,OH 45066USA

© 1996-2015 Parts Express, All Rights Reserved

Live Chat Software