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Handheld Temperature Humidity Meter with USB and RS232

  • RoHS Icon
  • CE Approved
  • UKCA


Item# HH314A

Please contact Technical Sales Team for assistance.
Handheld Temperature Humidity Meter with USB and RS232 HH314A HH314A
  • Replaced by HH414
  • Triple Display
  • Temperature/Humidity Probe
  • Second Temperature Input

HH314A Model Options

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Input Type
Maximum Temperature Measurement
Display Type
Accuracy Value
Supply Power

The HH314A is a low cost, high performance handheld meter with datalogging ability. It offers a triple display to show the temperature and humidity from a handheld probe and can display data from a separate K type thermocouple connected via a standard SMP type miniature connector to the T2 input. The temperature/ humidity probe uses a semiconductor and polymer capacitive sensor. A software package and interface cables are included to allow real time or recorded data to be read by a PC through the USB or RS232 port.
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Rated 5 out of 5 by from Works as expected. We bought it a month ago and are very happy with it.
Date published: 2016-01-27
Rated 5 out of 5 by from Great Product This is the second one I've owned. Really like this unit.
Date published: 2022-02-04
Rated 5 out of 5 by from Very reliable temp & humidity meter We have been using this model of temperature & humidity meter for at least five years. We have experienced no issues with the meter except when we melted the probe (our fault). We have multiple temp. & humidity cross checks in our labs and this meter has been the most accurate. Very long battery life. I can remember changing the battery twice in five years.
Date published: 2018-03-12
Rated 5 out of 5 by from Temp/humidity reader Good quality product. Speedy results. Makes our job easier.
Date published: 2016-12-28
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Hi. Can I use LabVIEW to read the real-time temperature from HH314A using the RS232 serial communication protocol? Has anyone done it? Thanks.

Asked by: Chunxu
The HH314A communication protocol can be sent if you contact the temperature group at
Answered by: ApplicationsEngineerANB
Date published: 2020-12-09

Does this device come with an NIST-traceable calibration certificate?

Asked by: throwaway27
Hi, Yes, it does come with a NIST certificate but with no points. Please email with any further questions. Thank you.
Answered by: Jane
Date published: 2019-06-19

I'm also looking for a list of HH314A commands for an automation project. Still possible to get it?

Asked by: M Larrosa
Thank you for your inquiry. Please send your request to
Answered by: Application Engineer JB
Date published: 2020-04-06

Want to use the HH314A in a automated test setup. Is it possible to get the RS232 command set of the HH314A? Want to make a LabView driver VI to get the Humidity and temperature value from the unit.

Asked by: Test Piet
Our Tech Support has reached out and emailed you the available commands for the HH314 series Temperature/Humidity Logger. Please contact us if you need any further assistance. Thanks!
Answered by: Jane
Date published: 2019-08-23
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Spare USB interface cable
31 In Stock
Power adaptor (115 Vac)
24 In Stock
RS232 interface cable
17 In Stock
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