Fieldpiece JL3KR4 HVACR Charge Kit

(10 customer reviews)


Brand Fieldpiece
Power Source Corded Electric
Style Handheld
Item Dimensions LxWxH 10 x 4 x 7 inches

  • Accurate at any elevation, directly transmits to mobile devices using job link app
  • Up to 350’ wireless signal
  • Stabilizes in under 5 seconds with +/-1° accuracy
  • Long flexible probe with sliding magnet for easy and precise hands-free testing



The new Job link probes have a powerful wireless signal range of 350’ and transmit through walk-ins. Hvacr professionals can quickly and easily view live readings and reports in the job link app from anywhere on the job site.

From the manufacturer


At Fieldpiece, we didn’t start with the goal of leading. Actually, we started with the idea that every HVACR professional in the field needs the best tools possible. In each member of the Fieldpiece team, you’ll find an inquisitive explorer always looking for a better way to do things. In fact, we got our start when founder, Rey Harju, had a vision for a stick meter with detachable heads that technicians could swap out to take different readings.

Additional information

Weight 2.74 kg
Dimensions 10 × 4 × 7 cm
Part Number


Item Weight

2.74 pounds

Product Dimensions

10 x 4 x 7 inches

Item model number



8 AAA batteries required.



Power Source


Item Package Quantity


Measurement System


Special Features

350 wireless range Live Measurements Powerful enough to transmit through walk-ins

Included Components

Job Link Charge Kit

Batteries Included


Batteries Required


Battery Cell Type




Date First Available

July 28 2017



10 reviews for Fieldpiece JL3KR4 HVACR Charge Kit

  1. Lemurph81

    Important to know before you buy! The app is terrible.The tools themselves are amazing, the app you are suppose to download to use the tools is almost terrible. Lots of bugs and flaws. Luckily you can download a different app to use for fieldpiece readings. Not sure how to rate this, tools are quality the app is terrible. If the app doesn’t work the fielpiece tools are useless. Remember that before you buy

  2. Clint Blankenship

    Over all good.I have had issues with the temperature probes not reading. Have to adjust them multiple times per use.

  3. abe salazar

    So far so good.I’ve been in The HVAC trade for 38 years so when this came along I thought it’s a great opportunity to try it out instead of always carrying my gauges to check pressures. Once I was able to install the field piece app I was able to sync it with the components. It works great but it doesn’t work all the time and I don’t blame the components I blame the field piece App because sometimes it will sync and then there are other times I have a hard time downloading my readings. Once I’m able to figure all the kinks out in the app and I will probably look for a tutorial and see if there is something I’m doing wrong. But in the meantime it works great when it’s working.

  4. Esteban Montoya

    Awesome replacement for Gauge ManifoldGreat tool to be able to walk around an RTU or be inside messing with an air handler while still be able to see my pressures and line temps.

  5. Waleed fatoh

    Not accurateNice tool to have it in your tool bag but you have to stay next to it otherwise you loose connection

  6. Larry

    Must haveI would have given a five star rating but had to send back for exchange within 30 days one temp clamp stopped working

  7. Track10trains

    Awesome setupQuite the handy little setup for spot checking units (especially ones with a smaller charge) without lugging a big set of gauges in. Probes seem to have some issues with being 2 or 3 psi off even after zeroing out multiple times. Battery life is fantastic even in the cold and I have had no issues with using these with measure quick.

  8. David


  9. Gus

    Very usefulI like it so much for the ease of use and displayed info. But if you must know before you purchase, there are services that comes with it that are paid subscription.But at least testing is free.

  10. Michael Elliott

    Great buyGreat buy

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