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Fieldpiece

Fieldpiece JL3RH Job Link Flex Psychrometer Probe w/Remote Data Logging for BLE 4.0 Devices, 2.4 GHz Radio Frequency, 0% RH to 100% RH Measurement Range

  • Based on 737 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Dec 13
Order within 10 hours and 26 minutes
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Features

  • Flex Psychrometer Probe
  • Psychrometer probe for Job Link systems
  • Compatible with SM380V and SM480V
  • Powerful 350' wireless range w/no transmitter required
  • Communicates with Job Link App

Description

Fieldpiece JL3RH - Job Link System Flex Psychrometer ProbeThe JL3RH Job Link System Psychrometer Probe has a long flexible wand and strong sliding magnet for easy measurements anywhere on the system. Get instant live readings from ducts, plenums, registers, or grilles for accurate diagnostics. A flexible wand with a powerful sliding magnet provides quick and easy measurements anywhere on the system. Place in critical locations based on system needs Requires only 3/8 hole for duct testingConnect to Job Link App or Wireless SM380V and SM480V Digital ManifoldsYou can connect your psychrometers directly to both the Job Link app and the wireless SMAN Refrigerant Manifolds (3-port SM380V or 4-port SM480V) to see live air temperatures readings while you're making adjustments to the system. Data log results in the manifolds, or include in Job Link System reports. 350' wireless signal with no transmitter required Powerful enough to go through most walk-in coolers and freezersReturn and supply indicator switch ensures you're recording the right measurements in the correct place. Dry bulb Wet bulb %RH Dew point EnthalpyThe JL3RH psychrometer probes are sold individually so you can use one or more at a time, or they can be purchased as part of the JL3KH6 Job Link Charge and Air Test Kit. Please note, the JL3RH is one probe.

Product Dimensions ‏ : ‎ 1.8 x 4.8 x 9 inches; 8 ounces


Item model number ‏ : ‎ JL3RH


Batteries ‏ : ‎ 2 AAA batteries required. (included)


Date First Available ‏ : ‎ June 11, 2018


Manufacturer ‏ : ‎ Fieldpiece


Best Sellers Rank: #19,260 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #74 in Test Probes & Leads


#74 in Test Probes & Leads:


Customer Reviews: 4.8 4.8 out of 5 stars 737 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Dec 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Accurate, precise, and an integral part of any HVAC technicians toolkit
I have the entirety of the JobLink kit sans the amprobe. These are indispensable within the HVAC industry. I’ve been in the residential/light commercial HVAC industry for about 25 years, and definitely don’t miss the days of having to run back, and forth from the indoor unit to the outdoor unit, then back again. These are extremely accurate, and as others have said you can be a good distance away from the psychrometers while being your pressure measurements, and get a solid look at the system as a whole(with the SMAN4 gauges, or the JobLink charging kit). Combine the JobLink static pressure probes, and enter the CFM into the airflow section of the JobLink app, and you can get a continuous reading of BTU’s produced. These psychometric probes are a lifesaver. Especially, if you’re working on an attic system in the dead heat of summer. Aside from being extremely useful when performing maintenance, they are a great diagnostic tool, and with the length of the probe(twss) you can position it to read directly in the airstream(twss iykyk). I can’t say enough good things regarding these, or any tool that’s part of the JobLink family tools, and especially the usefulness of the Fieldpiece app. The app shows you to observe your readings for the aforementioned situation, a combination analyzer, electrically, and historical graphing. The ability to print out a PDF that you can then provide the customer proving your diagnosis, or confirming your repair work(As a qualifying statement prior to the next sentence, the following does not apply to situations where the work wasn’t performed correctly, the diagnoses was incorrect, or damage was caused to the customers home/system)is especially important in today’s world where unfortunately if you don’t document your work, and repairs it can become a he said/she said situation that can put you in a negative position where you can be the recipient of a constant flow of demands for refunds from people exploring the situation in order to get something/anything free, or in extreme cases being caught up in legal issues if you’re not able to 100% verify your work. The Fieldpiece psychometric probes are a great addition to your toolbox that will pay dividends through the future ... show more
Reviewed in the United States on August 10, 2025 by christopher m norbury
    • Amazing tool
Review Image by elvis parra elvis parra
This tool works great. I can get a good signal from inside a insulated metal ice bin and still walk away a good distance without losing signal. The readings are very accurate and quick as well. Love this tool. It also has a very strong magnet that allows it to fit in even the smallest of places.
Reviewed in the United States on June 16, 2025 by elvis parra elvis parra
    • Great tool very helpful
These pscyrometers are extremely accurate really good value here if you need them quickly. Super durable. All readings compiled in the app on your phone
Reviewed in the United States on June 15, 2025 by Nathaniel
    • Small Caveat
It’s a great product. It is dependent upon your smart device. There is no info screen on the device itself. If you lose connection, you are back to old school. It is a great little tool regardless.
Reviewed in the United States on August 13, 2025 by hms
    • Great Product
Awesome arrived on time works very well
Reviewed in the United States on August 9, 2025 by Doyles AC
    • 👍
Awesome
Reviewed in the United States on September 23, 2025 by Jonathan Cole
    • Test temps remotely
This in combination with sman gauges make my job easier. I leave this at the indoor coil and dont have to go back inside for wet bulb/ superheat calculations. A little expensive for what it is but so is every tool in the HVAC industry. Due to ease of use, it has paid for itself!
Reviewed in the United States on September 2, 2023 by Shawn
    • Must have HVAC item
This is a must have if you're using job link. Great for taking Delta T while simultaneously taking your pressure readings while outside definitely keep you from having to walk back and forth when checking the system.
Reviewed in the United States on February 21, 2025 by Eliyah

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