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Call us at 1-888-826-6342.

1 & 2 Channel K & J Thermocouple NEMA-4X Temperature Meter

Handheld Digital Thermometers


Item# HH509R

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $214.84
5-9 $204.10
10-24 $199.80
25-49 $191.21
50-99 $186.91
100+ $182.61

In stock

Lead Time (If not in stock): 12 weeks
Handheld Digital Thermometers HH509R HH509R
  • NEMA-4X Dustproof
  • Water/Splash Resistant
  • Warning Beeper with Hi/Lo Setting, Time Setting
  • Clock and Elapsed Time

HH509R Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Number of Channels
Communications Protocol
Input Type
Minimum Temperature Measurement
Maximum Temperature Measurement
Input Connection Type
Display Type
Accuracy Value
Supply Power

HH508 Single
K/J/E/T/S Input
Backlit LCD
Accepts Type
K/J/E/T/S Thermocouple Inputs
Single Input

HH509 Dual
K/J/E/T/S Input Backlit LCD Display
Accepts Types
Thermocouple Inputs
Dual Input with Differential Fun
HH509R has all the same features as HH509
plus includes RS232 interface, cable, and software.

Specifications HH508 HH509
Backlit LCD
No. of Digits 1999 1999
Probe (Type) K/J/E/T/S K/J/E/T/S
Input Channel 1 2
Range °C -210-1767°C -210-1767°C
Range °F -346-1999°F -346-1999°F
Resolution 0.1°/1° 0.1°/1°
Hi/Lo Limits
w/Beeper Warning
Display 1 1
Battery 9 V 9 V
Auto Power Off
Basic Accuracy 0.1% +1°C 0.1% +1°C
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Rated 5 out of 5 by from as advertised This thermometer performs reliably and in conformance with advertised features.
Date published: 2017-07-06
Rated 4 out of 5 by from Handheld thermometers works perfectly, fits our needs and the shipping was quick!
Date published: 2023-07-27
Rated 5 out of 5 by from Great Job Great product,fast shipping, effective company. Great job guys!
Date published: 2023-03-06
Rated 5 out of 5 by from HH509 Handheld Digital Thermometer The HH509 was easy to set up and use. The construction of the unit is of high quality and seems to be quite durable.
Date published: 2021-02-18
Rated 3 out of 5 by from Is there an upgrade? We purchase stab probes that we use in your handheld thermocouples but the probes break often and the jack that the probe connects to within the thermocouple wears out and no longer holds the probes in place and/or gives false readings due to poor connection. We are using probe type 88301K probes and HH508 handheld thermometer. Is there and upgraded version that we could invest in to prevent having to re-order probes and thermometers due to the issues noted above?
Date published: 2018-08-27
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loading all QA

If I were measuring a point of contact temperature- I'm trying to measure the exact temperature of a heating element, what probe might I use, and would this be an acceptable model to use for the above application?

Asked by: Textiles
Thank you for your inquiry Textiles. Please send an email to or call 1-888-826-6342 and describe your application.
Answered by: Application Engineer SP
Date published: 2021-11-03

What probe lengths are available, and what diameter? I need a probe length of approximately 12-inches, 1/4-inch diameter. Thanks

Asked by: Hal444
Probe in the picture is 1/8''. Please see attached link for probe with the specs you are looking for:
Answered by: AndrewA
Date published: 2020-10-28

How often does the HH508 have to be calibrated.

Asked by: Cotton
It is recommended the HH508 be checked for calibration at least once per year and adjusted if out of tolerance.
Answered by: ANBENG
Date published: 2019-11-16

Does this unit come calibrated when purchased?

Asked by: Sofi
Thank you for your inquiry. Item# HH508 does not come calibrated. Only Item# HH508-CAL-3 comes with the calibration data.
Answered by: Application Engineer SP
Date published: 2023-02-17

Display will show type K, J,T, and E but not S. Wondering if when type is not displayed is that S?

Asked by: Wimil
The HH508 only has icons to highlight for J,K,T and E and if none of these are illuminated then it is set for type S.
Answered by: ApplicationsEngineerANB
Date published: 2020-12-28

The spec's say the meter can resolve 0.1°/1°, but the manual doesn't mention how to change display resolution; how is this done?

Asked by: brucha
The HH509 is a 3 1/2 digit display and will have a 0.1 resolution up to 199.9 then automatically change to 1.0 resolution from 200 degrees and above.
Answered by: ANB ENG
Date published: 2021-03-15

I am using the HH508 to take the temperature of melted butter. Does it matter what type setting is used?

Asked by: Jeff1331
It would depend on the type of thermocouple you are using to take the temperature. If you have a K type thermocouple, that would be the type setting you would want to have it in.
Answered by: Anonymous
Date published: 2020-11-23
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