Power Probe PPTM01AS Maestro Circuit Tester
Get the most from your workbench with the Power Probe PPTM01AS Maestro. This professional circuit tester brings advanced diagnostic features and powerful multimeter functions into one easy-to-use tool. Designed for technicians who value speed, precision, and reliability, the Maestro goes beyond basic testing to help you solve problems faster.
Built for Real-World Work
The Maestro features a tough, dust- and water-resistant housing (IP54 rated), so it stands up to harsh shop environments and outdoor jobs. Its color LCD display is bright and easy to read, helping you spot issues quickly. Users praise the quality, saying it “feels like it’s made for serious work” and noting how it “turns work that could take days into minutes.”
Advanced Diagnostics, Simple Controls
Connect to the Power Probe Tek app using your iOS or Android device for greater diagnostic functionality. The app unlocks more options, including data logging and a growing database of solutions for tricky electrical faults. Scan tool compatibility increases your reach with third-party app downloads.
No Guesswork—Just Answers
- Guided Diagnostics: Step-by-step screens walk you through the most common tests, so you’re never left guessing about what to do next.
All-in-One Electrical Testing
- DC & AC Voltmeter: Measure battery, alternator, or sensor voltage with precision.
- Scope-Like Trace Mode: Spot tricky electrical issues with waveform viewing once only found in expensive scopes.
- Resistance & Continuity: Check loads, find open circuits, and test resistance live or unloaded.
- Fuel Injector & Driver Testing: Find faults in modules, relays, and injector circuits.
- Power Applications: Apply battery voltage or ground directly to test components or circuits in real time.
- Self-Resetting Circuit Breaker: Work with up to 25A safely—no more blown fuses slowing you down.
Ready for Today’s Vehicles
- Works on 12V and 24V systems
- High-resolution voltage readings, TRMS, frequency, duty cycle, and more
- Designed for modern electrical systems, including sensitive modules
What Makes Maestro Different?
- Real-time app support streamlines diagnosis and documentation
- Reliable, rugged design endures daily use
- Fast, intuitive controls let you move from job to job without bogging down in menus
Built for Pros—Trusted by All
Technicians around the country trust Maestro to simplify automotive electrical testing, reduce diagnostic time, and help them fix more cars the first time. If you need a circuit tester that keeps up with you, Maestro delivers.
Ready to solve electrical problems with speed and confidence? Add the Power Probe PPTM01AS Maestro to your toolbox and see the difference on your next project.
FREE SHIPPING POLICIES
How FREE is it?
Shipping is free on orders being delivered to the 48 contiguous states, which excludes Alaska, Hawaii and Puerto Rico. But don't worry, Tooldom can still ship to these states. Please contact us via email or telephone to inform you of the additional charges.
Additional details for Orders shipping to Hawaii and Alaska
Please note that some items cannot be shipped outside of the continental United States. We reserve the right to cancel shipments to Hawaii, Alaska or Puerto Rico. We will, of course, contact you in the event that we cannot ship one or more of your items.
We do not ship internationally.
We only ship to locations within the United States, see map below.
Returns
Returns of new, unused items in their original packaging and in resalable condition are accepted within 30 days of purchase. You must request an RGA for your return from our customer service department prior to your return. If 30 days have gone by since your purchase, unfortunately, the item is not returnable.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Returns are subject to a restock fee of up to 50% depending on the condition.
Several types of goods are exempt from being returned. We also do not accept products that are sanitary goods, hazardous materials, or flammable liquids or gases.
Additional non-returnable items:
- Gift cards
- Software updates
- Scanners
- Electronic Diagnostic tools
- Items that require registration to be used and have been opened or registered
To complete your return, we require a receipt or proof of purchase.
Please do not send your item back to the manufacturer unless it is for warranty assistance (section on Defective Items for warranty questions).
There are certain situations where only partial refunds are granted (if applicable):
- Book with obvious signs of use
- CD, DVD, VHS tape, software or cassette tape
- Any item not in its original condition is damaged or missing parts for reasons not due to our error
- Any item that is returned more than 30 days after delivery
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 10 business days.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next, contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at
contact form
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately, sale items cannot be refunded.
Damaged items
If you receive an item that was damaged in transit please report the damage to us within 7 days of your receipt. Please keep the item as a return may be necessary. Please keep the shipping box and document the damage to both the ship box and the item with photographs. Contact us at 1-800-764-9313 or use our contact form to report the damage. We will provide instructions for a return if applicable and will be able to provide you with a refund or an exchange.
Defective items
Many items are covered by manufacturer warranty. Depending on the warranty, we may be able to assist you with a return for a refund or exchange for defects reported to us within 30 days of purchase. If the defect is not reported to us until after 30 days from purchase, then you will need to contact the manufacturer directly for warranty assistance. If the manufacturer warranty policy is to return the item to the retailer even after 30 days from purchase then we can assist you with a return for either a replacement or a refund . Please send us an email via our online contact form, or calling us at +1(800) 764-9313 for instructions as each manufacturer is different.
Large/bulky returns
For items that are shipped to you via LTL Freight service and palletized service, those returns (if accepted according to policy) must be returned in the same manner. Please use our contact form or call us at 1-800-764-9313 for instructions.
Exchanges
If your return qualifies for an exchange, please be sure to notify us of any changes to your shipping address for the replacement item.
Gifts
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.
If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and they will be notified regarding the return.
Shipping Returns Address
To return your product, you should contact us for mailing instructions.
You will be responsible for paying shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you may vary.
If you are shipping an item over $75, you should consider using a trackable shipping service and purchase shipping insurance. Proof of delivery will be requested if we do not receive an item you shipped to us in order that we may investigate the missing item.