Search  for anything...
Fieldpiece

Fieldpiece JL3KR4 HVACR Charge Kit | Fast Accurate Temps with Rapid Rail Technology - HVAC Tools with Padded Case

  • Based on 527 reviews
Condition: New
Checking for the best price...
$504.90 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Aug 2
Order within 3 hours and 38 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • 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

Description

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.

Brand: Fieldpiece


Power Source: Battery Powered


Style: Handheld


Color: Yellow


Item dimensions L x W x H: 10 x 4 x 7 inches


Power Source: Battery Powered


Measurement Type: Pressure, Temperature


Compatible Devices: Mobile devices with 'job link app', Bluetooth-enabled devices


Style Name: Handheld


Color: Yellow


Item Dimensions: 10 x 4 x 7 inches


Brand Name: Fieldpiece


Model: JL3KR4


Unit Count: 1 Count


UPC: 872641003395


Manufacturer: Fieldpiece


Global Trade Identification Number: 95


Included Components: Job Link™ Charge Kit


Item Type Name: HVACR Charge Kit


Part Number: JL3KR4


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • From rookie to pro in one tool upgrade
This is a game changer for HVAC work. No more refrigerant losses when taking readings. No more trying to read the gage to get it roughly accurate. No more struggles to get reliable temp reading. Ability to readout values from a distance on an easy to read app. This pays for itself in time saved, refrigerant losses, accuracy and "Tool Pride"! Costs a lot but well worth it. My only negative is the apps available limit their features unless you subscribe to a service and I hate subscription scams. Still the basic free app that comes with is adequate for a hobbyist or part time HVAC guy and your company will buy the subscription if you work for a legit company. ... show more
Reviewed in the United States on January 9, 2024 by CWT
    • A great tool
Review Image by Edwin
Review Image by Edwin
It connects directly to the air conditioning system's service port, minimizing the need for connecting hoses and excessive fittings, thereby reducing refrigerant leakage to a minimum. Furthermore, real-time measurement data can be read directly via a mobile app. This is an incredibly professional and efficient tool for HVAC contractors—it's fantastic! ... show more
Reviewed in the United States on April 4, 2026 by Edwin
    • Must have for HVAC techs
As described and very useful. Another great product from Fieldpiece.
Reviewed in the United States on March 14, 2026 by Darwin Adams Sr.
    • Time and step saver
Easy to use and accurate. Blue tooth has a good range making it possible to read pressures from attics.
Reviewed in the United States on December 20, 2025 by Mark Hogarth
    • Convenience worth the price
Works great, its very handy to be able to monitor pressures and temps while working in an attic space or while completing other tasks. Compactness of bag helps when visiting customers home, it reduces the size of my tool kit and I done have to worry about the probes getting damaged when working in attic spaces. Love that I don't have to purge hoses now and that I can monitor just one side as needed ... show more
Reviewed in the United States on June 26, 2025 by Rob Scott
    • Solid performance
They work good. The downsides are having to sign into an app periodically and the clamps have to make clean contact on both sides of the clamp (continuity between sensor jaws) which can be a pain in the neck sometimes; all other wired clamps I've used didn't require this. Trust me, it can be inconvenient at times, otherwise, I appreciate the quality. ... show more
Reviewed in the United States on June 13, 2026 by Rich
    • Saves time and space
Review Image by Josh
Review Image by Josh
Review Image by Josh
Very cool and impressed with the minimalism and technology here. You're able to check your pressures without needing to purge air in the hoses (at least for your diagnostic stage). Even hooking up hoses can be done easily with a T-valve. I was impressed with how far I was from the unit I was still able to read the gauges on my phone. Very impressed so far. Will update the review if anything changes in the long run. ... show more
Reviewed in the United States on May 13, 2025 by Josh
    • Good product
Excellent product. I have the Testo gauges with hoses, and I recently bought these gauges. I recommend them for making quick diagnoses without using hoses or losing any Freon. They are really accurate, i use them with MQ hvac app
Reviewed in the United States on September 29, 2025 by Onay

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...