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Home / Shop / HVAC Test & Measurement Tools / Charge & Test Kits / Fieldpiece JL3KR4 – Job Link™ Probes Wireless Charge Test Kit

Fieldpiece JL3KR4 – Job Link™ Probes Wireless Charge Test Kit


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FREE delivery over $99

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Need Help? Speak with our HVAC and tools experts. Call or text (786) 239-7444.


The Fieldpiece JL3KR4 Job Link Probes Charge Kit brings HVAC diagnostics into the 21st century. You can analyze your AC system much faster with the set of intelligent probes from the group. Each search has a wireless range of 1000 feet (305 meters) and can be coupled with the Job Link app on your mobile device to view each measurement live.

The Fieldpiece JL3KR4 Job Link HVAC Kit is designed to give HVAC technicians more freedom and improve productivity while on the job site. Each kit includes four wireless probes: 2 pressure and two pipe clamps.

The JL3PR Job Link Pressure Probes are designed to fit tight spaces and feature an angled 1/4″ fitting. At the bottom of each unit is a switch that toggles between Blue (Low Side) and Red (High Side). This is an excellent feature because it communicates with the Job Link app and shows up when viewing the measurements.

The JL3PC Job Link Premium Pipe Clamp Probes take fast and accurate temperature measurements surpass California’s Title 24 requirements. These clamps can be used on pipes ranging from 1/4″ up to 1-3/8″ with this information being etched on the side of the clamp to reference quickly in the field.

The pipe clamps also utilize the patent-pending Rapid Rail sensor technology that requires electrical continuity to complete the circuit, which improves accuracy by reducing ambient conditions’ effect on the measurements. This also allows the temperature readings to stabilize in under 5 seconds.

The new Fieldpiece Job Link smart probes are an excellent addition to any HVAC technician’s toolbag by giving a clear live view of what the system is doing quickly and effectively. Do more with Job Link probes today!


  • Fieldpiece JL3KR4 Job Link™ Probes Charge and Air Kit
  • Powerful Wireless Signal Strength
  • Up to 1000’ wireless signal
  • Powerful enough to go through most walk-in coolers and freezers
  • Directly transmits to your mobile device with the Job Link System App
  • iOS® and Android™ compatible
  • Email reports
  • Rapid Rail™ Sensor Advantages
  • Stabilizes in under 5 seconds
  • Beeper and LED indicate accurate connection
  • The Rapid Rail™ sensor uses pipe to complete circuit so ambient conditions don’t affect the measurement
  • Narrow jaw connects in tight spaces and on irregular pipe shapes
  • Reliable Pressures Regardless of Location
  • 45° angled fitting easily connects in tight spaces
  • Pressure sensors accurate at any elevation
  • Calibrates automatically when powered on
  • Plus
  • Great for critically charged systems
  • Water Resistant to IP55
  • Quick-access protective case
  • High/Low side switch and indicator
  • 1 Year limited warranty
Fieldpiece JL3KR4 Job Link™ Probes Charge and Air Kit
Wireless Range : 1000 feet (305 meters) or more
Wireless Frequency : 2.4 GHz
Battery : 2 x AAA (included)
Battery Life : 150 hrs typical alkaline
Auto Power Off (APO) : 2 hrs (can be disabled)
Minimum Device Requirement : BLE 4.0 devices running iOS® 7.0 or Android™ 5.0
Job Link™ Pressure Probe - JL3PR
Connector Type : 45º Standard 1/4" NPT female flare
Best Accuracy : ± 1 psig (±7 kPa)
Measurement Range : 0 to 580 psig (0 to 4000 kPa)
Maximum Overload : 800 psig (5500 kPa)
Water Resistant : Designed to IP55
Job Link™ Premium Pipe Clamp Probe - JL3PC
Pipe Compatibility : Electrically conductive 1/4" to 1 3/8" (6.4mm to dia.
Accuracy : ± 1 °F (± 0.6 °C)
Measurement Range : -50 °F to 257 °F (-46 °C to 125 °C)
Stabilization Time : 3 seconds typical
Measurement Feedback : Beeper and LED
Water Resistant : Designed to IP55
Job Link™ Flex Psychrometer Probe - JL3RH (Sold Separately)
Flexible Probe : 0.36" (9mm) diameter, 9.25" (235) length
Best Accuracy : ± 1 °F (± 0.6 °C) ± 2.5%RH
Measurement Range : -4 °F to 140 °F (-20 °C to 60 °C) 0% RH to 100% RH
Are these Fieldpiece JL3KR4 probes compatible with MeasureQuick?

Yes, the MeasureQuick app is compatible with all Fieldpiece Job Link probes.

Is the JL2 Wireless transmitter necessary for wireless connectivity?

No, the JL3KR4 probes can connect to your electronic devices via Bluetooth technology.

Are these fieldpiece wireless probes really waterproof?

The JL3PC Job Link Premium Pipe Clamp Probes and the JL3PR Job Link Pressure Probes are both water resistant to IP55 standards, meaning they are protected from low pressure water jets from any direction.

Can the JL3KR4 protective case fit more probes?

Yes, you can fit three JL3PC Job Link Premium Pipe Clamp Probes, three JL3PR Job Link Pressure Probes, and three JL3RH Job Link Flex Psychrometer Probes snuggly in the case.

What is the warranty on these items?

1 Year Limited Warranty for all probes. Fieldpiece specifically states, “In the USA, your Fieldpiece meters, standalone instruments, accessory heads, and pocket tools are warranted against defects in material or workmanship for one year from date of purchase. Fieldpiece will replace or repair the defective unit, at its option, subject to verification of the defect. This warranty does not apply to defects resulting from abuse, neglect, accident, unauthorized repair, alteration, or unreasonable use of the instrument."

  • (1) Fieldpiece JL3KR4 Job Link Charge Kit includes:
  • (2) Job Link Premium Pipe Clamp Probes - JL3PC
  • (2) Job Link Pressure Probes -JL3PR
  • (1) ANC18 Protective Case
  • (8) AAA Batteries

Customer Reviews

Based on 1 review
Jacqueline Gonzalez
Well built

Fantastic product. Very light and easy to use. Very good range

Fieldpiece JL3KR4 – Job Link™ Probes Wireless Charge Test Kit