Metrel DeltaPAT 3309 BT Review
The Pros – Battery and mains powered for portability. Stores 1500+ results and connects to PC or printer via Bluetooth. Easy-to-read display with simple navigation. Performs all essential tests required. Contains In-built Iso Transformer. Fully upgradeable for future proofing.
The Cons – If you're wanting to use the Bluetooth functionality, it's only compatiable with an Android Smart Device, which may limit some users.
The Bottom Line – For anyone after a dependable tester without overcomplicating things, the DeltaPAT 3309 BT is a solid option. It’s portable, user-friendly, and covers all key tests required for compliance. With optional printer and scanner add-ons available, it’s a future-ready choice for both beginner and pro test and taggers.
Key Features of DeltaPAT 3309 BT
Following strong feedback over the years - and now reaffirmed in our hands-on 2025 testing - it's clear the DeltaPAT 3309 BT continues to be one of the most balanced and dependable portable appliance testers on the market. Designed for users who need a mix of portability, compliance, and ease-of-use, this refreshed review takes into account the latest industry needs and confirms why the DeltaPAT 3309 is still a go-to chOne of the most user-friendly testers available, the DeltaPAT features a large backlit screen, plus green and red LED side lights that display a clear PASS or FAIL result. Progress and test outcomes are easy to read, even in low-light environments, with large font and intuitive icons.oice for many.
Battery and Mains for Total Flexibility
Unlike a lot of older testers restricted to mains power, the DeltaPAT 3309 BT can run on either mains or its inbuilt rechargeable battery. This gives you true flexibility - ideal for jobs across multiple locations or sites where power access is limited. The battery charges while plugged into mains, so it’s always ready to go.
Clear PASS and FAIL Indicators with Easy Interface
Known for being one of the most user-friendly testers available, the DeltaPAT features a large backlit screen, plus green and red LED side lights that display a clear PASS or FAIL result. Progress and test outcomes are easy to read, even in low-light environments, with large font and intuitive icons.
Memory and Reporting Tools
The DeltaPAT 3309 BT can store up to 1500 appliance test records internally. Each entry can include details like asset ID, make, model, location, serial number, and test result. You can then export the data to your PC using the included PATLink PRO software via USB or RS232. This allows for smooth record-keeping and easy and professional looking report generation.
In-built Isolation Transformer
Unlike many testers in its category, the DeltaPAT includes a built-in isolation transformer. This is a huge win for users who previously had to fork out extra money and carry a separate transformer to perform particular tests. The built-in transformer effectively saves space, cuts setup time, and ensures safer, more compliant testing.
Bluetooth + Upgrade Options
Built-in Bluetooth lets you wirelessly connect the unit to compatible Android devices and printers. You can expand the setup down the track with:
- Test & Tag Printer – for automatic on-the-go tag printing.
- Barcode Scanner – to streamline retesting and asset management.
- Android App Integration – using the aPAT app for test control and logging.
This modular approach gives you the freedom to scale up as needed - without paying for extra features you won’t initially use.
How it Performs in the Field
In 2025, we still see the DeltaPAT 3309 BT used by a huge range of different types of individuals across Australia - especially in mobile environments like tradies, maintenance teams, and test and tag service providers. Its battery-powered option makes it highly portable, and its solid plastic build holds up well on the road.
Once you’re familiar with the layout, it’s a fast and intuitive machine. The large monochrome screen and side lights speed things up.
The in-built Isolation Transformer is perfect for anyone who's had to carry an extra one in the past - it reduces clutter and speeds up the test and tag process.
Drawbacks to Consider
Android only compatibility has got to be the main pain point we see. While the DeltaPAT 3309 BT includes Bluetooth support and can connect to Android devices for app control and wireless printing, it does not support Apple iOS. This could be a drawback for users already committed to iPhones or iPads, as they won’t be able to take advantage of some of the wireless features unless they switch to Android for test-related tasks.
We've found a lot of test and taggers will carry a cheap Android device purely for test and tag tasks.
Is it Worth the Investment?
If you’re after a dependable, field-proven, and easy-to-use tester that works both on the bench and out in the field - the DeltaPAT 3309 BT is a smart buy. With all the required tests by Australian Standards, 1,500 result storage, Bluetooth, and an in-built isolation transformer, it’s one of the most well-equipped PAT Testers in its price range.
You can start simple and build out your system over time with optional upgrades like printers and scanners. While the Android-only support might not work for everyone, for the majority of users it’s not a dealbreaker.
That’s exactly why the DeltaPAT 3309 BT holds its place in our Top 5 PAT Testers for 2025.
Want to see it in action?
View the full specs and pricing for the Metrel DeltaPAT 3309 BT