Fieldpiece JL3KR4 Job Link Charge & Test Bluetooth Probe Kit | HVAC

Fieldpiece JL3KR4 Job Link Charge & Test Bluetooth Probe Kit

The Fieldpiece JL3KR4 is a wireless refrigerant charge and test kit for HVAC/R technicians who need to capture discharge pressure, suction pressure, liquid line subcooling, and suction line superheat simultaneously — all wirelessly via the Fieldpiece Job Link app. The kit includes two pressure probes and two pipe clamp temperature probes, giving you a complete refrigerant circuit snapshot without running cables between the unit and your manifold.

At $789.99, the JL3KR4 is the focused charge-and-test version of the Job Link kit range — suited to technicians who primarily need pressure and temperature data for refrigerant charging and system performance checks, without the psychrometer probes included in the larger JL3KH6 kit.

Confirm exact inclusions, compatible Job Link app version, and all specifications against the Fieldpiece manufacturer's current datasheet before ordering.

What's Included

• 2 x JL3PR Wireless Pressure Probes (discharge and suction)
• 2 x JL3PC Wireless Pipe Clamp Temperature Probes (liquid line subcooling and suction line superheat)
• Padded carry case (ANC88)
• 8 x AAA batteries (total)

Key Features

• Wireless Bluetooth connectivity — 100+ metre range (confirm in your environment)
• 2.4 GHz BLE 4.0 — compatible with Fieldpiece Job Link app (iOS and Android)
• Rapid Rail™ sensor design on pipe clamps — fast, accurate readings on awkward pipe configurations
• Pressure probes fit tight spaces — 45° standard 1/4" NPT female flare connector
• IP55 water resistant — suited to outdoor and plant room environments
• 150-hour typical battery life per probe (AAA alkaline)
• Auto power-off after 2 hours of inactivity
• Padded carry case included for transport and storage

Probe Specifications

Pressure Probes (JL3PR × 2):

• Connector: 45° standard 1/4" NPT female flare
• Accuracy: ±1 psig (±7 kPa)
• Range: 0 to 580 psig (0 to 4,000 kPa)
• Max overload: 800 psig (5,500 kPa)

Pipe Clamp Temperature Probes (JL3PC × 2):

• Pipe compatibility: 1/4" to 1-3/8" (6.4mm to 34.9mm) diameter
• Accuracy: ±1°F (±0.6°C)
• Range: -50°F to 257°F (-46°C to 125°C)
• Stabilisation: 3 seconds

All probes: 2.4 GHz BLE 4.0, 2 x AAA batteries each, 150hr typical battery life, IP55 water resistant, auto power-off 2 hrs.

JL3KR4 vs JL3KH6 — Which Kit?

• JL3KR4 ($789.99): 2 pressure probes + 2 pipe clamps. Focused on refrigerant charge and temperature. No psychrometer probes.
• JL3KH6 ($1,459.99): Adds psychrometer probes for supply air temperature and humidity measurement. Suited to full commissioning and air quality diagnostics.

If your work is primarily refrigerant charging and system performance checks, the JL3KR4 covers the essentials. If you also need airside data — supply air temperature, humidity, and duct measurements — the JL3KH6 is the more complete kit.

Best For

• HVAC/R technicians performing refrigerant charging and system performance verification
• Residential and commercial AC service requiring simultaneous pressure and temperature data
• Technicians who want wireless diagnostics without the full air test kit
• Technicians already using the Fieldpiece Job Link ecosystem

Check Before Ordering

• Confirm exact inclusions against the Fieldpiece JL3KR4 datasheet
• Pressure probe connector is 1/4" NPT female flare — confirm compatibility with your manifold or system service ports
• Pipe clamp suits 1/4" to 1-3/8" pipe diameter — confirm suitability for your pipe sizes
• Confirm Bluetooth range is adequate for your jobsite environment
• Confirm Job Link app compatibility with your smartphone OS version
• Refrigerant handling requires appropriate trade qualifications — confirm licensing requirements in your state or territory
• Confirm warranty terms with HVAC Trade Supply at time of purchase

Frequently Asked Questions

What is the difference between the JL3KR4 and JL3KH6?

The JL3KR4 includes 2 pressure probes and 2 pipe clamp temperature probes for refrigerant charge and test work. The JL3KH6 adds psychrometer probes for supply air temperature and humidity measurement, making it the more complete commissioning kit.

Does the JL3KR4 work with the Fieldpiece Job Link app?

Yes — all JL3 series probes connect to the Fieldpiece Job Link app via Bluetooth. Available for iOS and Android. Confirm current app compatibility with your device and OS version before ordering.

Can I add more probes to the JL3KR4 kit later?

Yes — individual JL3 series probes can be added to your Job Link setup. See the Fieldpiece Job Link range or contact our team for options.

What is the warranty?

Confirm current warranty terms with HVAC Trade Supply at time of purchase. Fieldpiece tools are generally supported by a manufacturer warranty — refer to product documentation for full details.

How fast is delivery across Australia?

We dispatch orders Australia-wide. See our shipping information page for current delivery estimates.

Need the full air test kit or individual probes? Browse the Fieldpiece Job Link range or contact our team for advice.