Circuit / Relay Testers

Professional quality tester for late model trucks fitted with 7 pin type sockets. These testers are designed for testing the vehicle side socket, not the trailer itself.

There are 2 versions - for either 24N / 24S sockets.

• CANbus compatible.
• 4m cable to allow the unit to be used in the cabin.

Professional quality tester for late model trucks fitted with 7 pin type sockets. These testers are designed for testing the vehicle side socket, not the trailer itself.

There are 2 versions - for either 24N / 24S sockets.

• CANbus compatible.
• 4m cable to allow the unit to be used in the cabin.

A handheld diagnostic tool designed to test circuits / electrical connections.Operates from 3-48V. Includes probe adaptor for testing terminal connections.

Specially designed for testing insulation on high voltage cables. An ESSENTIAL tool for working on hybrid or electric vehicle systems. Circuitry inside the unit is built specifically to safely cope with high voltages and currents found in these types of vehicle.

• Conforms to EN61010 / CAT III (1000V
• Supplied with test leads, batteries and carry case

The original Power Probe 3 uses a 20ft cable which attaches to the vehicle's battery, allowing the user to perform an electrical test anywhere in, or around the vehicle. The PP3 is a Voltmeter and Continuity Tester, with Audible & Visual indicators along with two LED headlights to light up your work area. This circuit tester also supplies Battery Voltage or Ground to activate components. This powerful time-saver tool is perfect for every level of technician.

• Voltmeter and Continuity Tester
• Relay & component tester
• Supply battery voltage and ground to test components
• Audio tone 20' Jumper lead
• Works on 12-24V sources
• Protected by 8 Amp circuit breaker

Perform battery checks, charging system checks, fuse checks, voltage checks, component tests...

All at the flick of the switch, while being guided through with our two NEW menu options: EZLEARNING and EZDIAGNOSTIC.

• New larger LCD screen
• Upside down? No problem! New flip screen feature
• Menu driven. Makes navigating a breeze
• Limited edition carbon fibre skin

The Power Probe PP3EZ includes all the powerful testing modes and features of the Power Probe III plus now includes 2 new modes - EZ Learning Mode and EZ Diagnostics Mode. The PP3EZ speeds you through the diagnosing of 12 to 24 volt automotive electrical systems. After connecting the PP3EZ's clips to the vehicle's battery, the automotive technician can determine at a glance, the voltage level and the polarity of a circuit without running for a voltmeter or reconnecting hook-up clips from one battery pole to the other. The power switch allows the automotive technician to conduct a positive or negative battery current to the tip for activating and testing the function of electrical components without wasting time with jumper leads.

• New larger LCD screen
• Upside down? No problem! New flip screen feature
• Menu driven. Makes navigating a breeze

The Power Probe 4 is a multi-use Circuit Tester with built-in diagnostic power.

This tool simplifies the testing of fuse boxes, verifies correct operation of motors, lights, relays, sensors, wires, communications circuits and computer drivers. The large LCD colour display makes viewing live test information and mode selection simplified in even direct sunlight or complete darkness.

• Supplies Power and Ground
• Digital voltmeter with Min/Max voltage capturing
• 20 ft power lead
• Tests for bad grounds / short circuits
• Powered by vehicle battery
• Gold plated brass probe tip
• Directed LED head lamps to illuminate test area
• Ohmeter / Frequency
• Pulse width (+tive & -tive)

Additional diagnostic modes:

• Petrol fuel injection tester
• PCM / ECM driver tester
• Signal tracer (use with ECT3000)

The Power Probe 4 Master Combo Kit combines the Power Probe 4, ECT3000 and various accessories to provide the ultimate combination of diagnostic and circuit-testing capabilities.

The Power Probe 4 provides simplified testing of Motors, Lights, Relays, and Sensors, and even Fuel Injectors. Also, like all Power Probe circuit-testers, it supplies Power and Ground for functional component testing on or off the vehicle. The ECT3000 will help you trace short and open circuits quickly and accurately.

Connects to any Power Probe. Limits output voltage to 5V. Essential for safely testing sensors and computer circuits on vehicles. Now you can supply a 5V reference signal to test computer modules, wiring and the components connected to them.

This Power Probe kit contains two adaptors - a male / male and a female / female adaptor.  The 4mm connectors are suitable to use with all standard multimeters.

• male / male adaptor
• female / female adaptor

Apply voltage from the Power Probe tip to quickly actuate components.

• Test circuits for voltage, continuity or polarity. Green / red LEDs provide quick confirmation.
• 6m heavy duty extension lead.

The ECT3000 Electrical Short and Open Finder makes locating shorts and opens quickly and more accurately than ever before. When the ECT3000 Transmitter is connected to an isolated circuit, it will quickly determine if the circuit has an open or if the circuit is shorted to ground. The ECT3000 receiver is designed to detect signals from the transmitter and its new adjustable distance indicator allows for accurate detection.

• Transmitter quickly determines if circuit has an open or if circuit is shorted to the ground.
• Receiver features a new adjustable distance indicator.
• Light bulb sockets for testing lighting systems. Plus probes / alligator clips.
• Works on 12-24V systems.

Measures up to 20A (and as low as 1 milliamp). Displays current in realtime. Adaptors work with all Power Probe circuit testers!

PPDRAW + PPFUSE Combo Pack - Diagnose Smarter, Save More Take full control of automotive diagnostics with this powerful pairing. The PPDRAW Draw Monitor connects via OBDII to supply 12V power, monitor battery voltage, and detect leakage currentÑplus it backs up vehicle memory during battery replacement. Pair it with the PPFUSE Fuse Monitor to track down parasitic draws across circuits with real-time amp readings, no fuse removal required.

Together, they offer unmatched accuracy, convenience, and mobilityÑeverything you need to monitor, diagnose, and repair electrical issues fast. Save by bundling both tools and streamline your diagnostic game .

The Power Probe Fuse Monitor is designed to locate / isolate which circuit parasitic draw lies by measuring current across fuses without removing them. The PPFUSE can be used on Maxi, Mini, & ATC fuses with a maximum Amp rating of 80A. The Fuse Monitor calculates amp draw based on fuse size in real time. The PPFUSE is USB-C rechargeable, comes with a belt clip, has replaceable tips, and a work light.

• Locate parasitic draw across fuses
• The top of the tool shows inactive, active, or open for quick fuse diagnosis.
• Accurately measures current without removing the fuse
• Ability to read Maxi, Mini, & ATC fuses up to 80A
• Belt clip
• Flashlight
• Replaceable tips
• Pair with the PPDRAW monitor to quantify parasitic draw and use the fuse monitor to isolate the source.
• USB-C rechargable
• Live current reading display (A)
• Screen hold
• Screen brightness control
• Accuracy down to 1mA
• Magnetic backing
• Auto rotating screen
• Auto shut-off

The Gold Series Lead Set gives you the ability to extend your Power Probe circuit tester.

This kit includes 3 extension leads, 2 adaptors, two piercing probes and an extra probe tip. A must have kit for diagnosing electrical issues.

• Super flexible 10 gauge leads - stackable (1ft | 3ft | 6ft)
• Power Probe replacement tip
• Small piercing probe (Green) - for 20-28 gauge wires
• Large piercing probe (Yellow) - for 8-18 gauge wires
• 4mm female - female adaptor
• 4mm male - male adaptor
• Alligator clip adaptor
• Adaptor cap

The original! A powerful time saver perfect for all technicians.

• Voltmeter & Continuity tester
• Relay & component tester
• Supply battery voltage & ground to test components
• Works on 12-24V sources
• Audio tone
• 20’ Jumper lead

The Power Probe Maestro is a cutting edge circuit tester designed for professional automotive diagnostics. As part of the Pro Series, it features advanced multimeter functions, diagnostic modes, and an easy-to-read color LCD display housed in a rugged, dust- and water-resistant casing.

With scope-like trace mode, DC and AC voltmeter capabilities, and fuel injector testing, the Maestro simplifies troubleshooting for motors, lights, relays, sensors, wires, and communication circuits. It operates on 12V and 24V systems, offering precise voltage, resistance, and frequency measurements.

Additionally, the Maestro pairs wirelessly with the Power Probe app, enabling remote display, data streaming, and recording for enhanced diagnostics.

Files can be emailed, exported or simply saved for future reference.

Easily verify correct operation of:

• Motors
• Lights
• Relays
• Sensors
• Wires

This product is designed for use in monitoring car battery voltage, leakage current, and serving as a backup power supply when replacing the battery. The product is connected to the car's OBDII interface via an OBDII connection cable to supply 12V power to the car and monitor the car system's leakage current for diagnosing various faults. It can also serve as a backup power supply for the car during battery replacement, preventing the car's mainboard from losing power and data. Draw Monitor can also monitor battery voltage through the OBDII port. Please read the instruction manual carefully before using the product.

• Supplies up to 10 amps
• Connects via OBDII
• View and record data via Bluetooth on App
• USB-C rechargeable
• Adjustable current output alarm & adjustable auto power off setting
• Graphing mode
• Monitor function input: 0-30V
• Voltage display accuracy: 1%+5dig resolution 0.1V
• Current display accuracy: 3%+5dig resolution 1mA

The Power Probe Tungsten Penetrator Tip is a durable probe tip designed for enhanced electrical contact. Made from tough tungsten metal, it is three times stronger than standard probe tips, allowing it to penetrate corrosion, oxidation, and rust for reliable testing. Compatible with Power Probe 3, 3EZ, 4, Maestro, and Basic models, it ensures stable readings for automotive diagnostics.

• Compatible with all current Power Probes with removeable tip
• Standard 4mm banana jack

The PPPWM is an adapter that is plugged into Power Probe products with 4mm banana plugs (such as THE MAESTRO / PP4 / PP3 / PP3EZ etc).

The adapter can be set for the output 0-100% pulse width drive waveform by pressing the key. It is mainly used for automotive applications such as automotive fan circuit detection, to find the part of the circuit failure, in order to replace and repair.

Duty cycle adjustable 5% - 100%.

For 12V / 24V use. 10A max continuous output.

The Power Probe TSTUSB is a mini probe USB socket tester designed to quickly check the functionality of USB power outlets in vehicles. It illuminates when power is present, making it a simple and efficient tool for verifying USB ports without needing additional cables. Ideal for automotive professionals and everyday users alike, it saves time and effort when diagnosing power issues.

Very sharp probes suitable for piercing cable. Kit comes with two probes, one for 8-18 gauge wire, and the other for 20-28 gauge wire.

4mm banana jacks suit all standard multimeters / Power Probe units.

• Yellow - suits 8-18 gauge wire
• Green - suits 20-28 gauge wire

A great value kit featuring the legendary Power Probe 3 - the digital voltmeter that also provides diagnostic power with the click of a switch. Includes deluxe lead kit, and ECT3000 circuit tracer and short finder. Essential tools for every technician.

Safely test voltage up to 1000V AC / DC. Able to verify the absence of voltage even with discharged batteries.

• Conforms with EN 61243-3. CAT III 1000V / CAT IV 600V
• LED indication range: 12V - 1000V AC / DC
• LCD indication range: 6V - 1000V AC / DC
• Rugged double insulated wire
• Continuity / Diode test
• 2x AAA batteries included