PT1AU 12/24V Electrical Circuit Tester Power Probe

The PT1AU is a revolutionary automotive electrical tester to help you perform every type of diagnostics and service including power injection, measurement, ground testing, polarity checks, continuity testing and components activation. Accurately diagnoses the DC Voltage, AC Voltage, Resistance and Diode on 12v to 24v electrical systems and ability to power/activate components. It uses the vehicle’s battery to supply 12V to 24V power supply to circuit-breaker-protected power or ground directly to the load. The 8Amp circuit breaker can be adjusted to match the fuse size of the circuit being tested. This makes checking component quick and easy whether its lights, window and seat motors and electric mirrors. With its dual built-in flashlight and 6M (20ft) cable, you can reach all around your vehicles, trucks and trailer (12V-24V) without constantly searching for suitable vehicle ground.

Functions

Performs every type of service including power injection, measurement, ground testing, polarity checks, continuity testing and components activation
Reads 12V-24V voltage, current and resistance at the fingertip
With a flip of the power switch, you have an instant hot/ground lead for powering up electrical components like cooling fans, relays, etc.
Simultaneously uses the hot lead and the ground lead to activate components right in your hand
Instantly identifies positive, negative and open circuits
Tests for bad ground contacts instantly, allowing you to follow and locate shorts fast without wasting fuses
Instantly checks continuity of switches, relays and diodes
Circuit breaker protected
Built-in dual Flashlight enables you to work in the dark
Audio tone indicator allows for no-look menu scrolling once users are familiar with menu tone assignment
20ft cable provides excellent accessibility to test along the vehicle

Package Includes

User manual
Adapter
Battery hookup clips
Probe tip
Extension cable
Rugged blow molded case

12V/24V Voltmeter DC/AC/Resistance/Current/Diode Testing Modes

Circuit, Continuity & Polarity Testing

Activates & Powers Up Components

Short-Circuit and Bad Ground Indicator

Easy to use menu with colourful LCD screen and built-in dual flashlight

Protection design for extra safety

Display: TFT colour display (160 x 128 PPI)

12.0 - 30.0V power provided via vehicle battery. Recommended 12v power supply

Min Operating Voltage: 8 VDC

Max Operating Voltage: 12 VDC

Max Tip Voltage: 40 Volts

Probe Tip Resistance to Ground: 1000 K Ohms

Computer Safe 0.1mA floating tip

Voltage Measurement 0 to 40 VDC / VAC

Voltage Resolution 0V -to 40V – 0.01V (10mV)

Glitch Capture > 50 μS Min Pulse Width

Power Feed Test < 3 mA

Resistance Measurement: 0 Ohms to 1M Ohms

Frequency Measurement 40 Hz to 20KHz

Circuit Breaker: 8 Amp Thermal – Auto Reset

Breaker Trip Response: 8 Amps = No Trip / 8 Amps = 1 sec / Short Circuit = 0.3 sec

Operating Temperature: -20°C (-4°F) to 50°C (122°F)

Storage Temperature: -40°C (-40°F) to 65°C (149°F)

Dimensions: 195 mm (7.68”) *50.5 mm (1.99”)*33mm

Delivery

99% of purchases are dispatched from our Melbourne warehouse within 24 hours of payment. Every parcel is shipped with Australia Post e-Parcel, complete with tracking and signature on delivery.

Need it sooner? Express shipping is also available—check if your postcode is in the Next Day Delivery network.

Returns

Shop with confidence. We offer a 30-day money back guarantee on all orders. If you’ve had a change of mind, simply return the item in re-original condition and we’ll make it right.

Warranty

All AZscanners products are backed by a 12-month warranty (unless otherwise stated). We stand by the quality of our tools and will repair or replace your item if a covered fault arises.

Buying your scan tool should feel easy, safe, and backed by a team you can trust.

That’s why thousands of mechanics, fleets, and car owners across Australia choose AZscanners. Here’s our promise to you:

Trusted Since 2013

We’ve been Australia’s go-to supplier of premium diagnostic scan tools for over a decade. From workshops and mobile mechanics to DIY users, we’ve built our reputation on quality, reliability, and real support.

30-Day Money Back Guarantee

Changed your mind? No problem. You have 30 days to return your item in its original condition for a full refund. It’s our way of making your purchase completely risk-free.

Quality You Can Count On

Every product in our range is hand-picked for performance, compatibility, and durability. Whether you’re after a professional-grade scan tool or an easy solution for home use, we’ve got you covered.

Local Support that Cares

We don’t just sell scan tools — we support them. Our team of technicians is here to answer your questions before and after purchase, so you’re never left on your own.

Fast & Reliable Shipping

99% of orders are shipped within 24 hours (from our Melbourne warehouse) with tracking and signature included. Need it quicker? Express delivery is available.