Define Instruments

Define Instruments is a proudly New Zealand owned, growing company, with branch offices in both South Africa and the United States, and many years’ experience developing and manufacturing control instruments for both local and global buyers.

SD-50X 4-20mA Loop Powered Display

At Define Instruments, we’ve always been innovators. Many years ago our engineering team designed the world’s first 4-20mA loop powered display – it was breakthrough technology back then, and has been one of our best-selling products ever since.

But it didn’t end there! Since then we’ve been constantly pushing the boundaries to improve the usability and functionality of our existing products, and developing new technology to keep up with changing market needs.

Twin LinkWe’ve developed the highly popular ZEN-16, with 16 isolated analogue inputs, data logging, and a custom software suite for configuration and data viewing. We’ve also added the Merlin Universal Indicator, with universal input and easy USB configuration, and the Twin Link Point to Point system, for easy wireless data transmission and control.

While there’s always something ‘in the pipeline’ at Define Instruments, we do have a core group of tried and true stock products that are constantly heading out the door.
Please visit to browse our product range, and find out the latest news on our up-and-coming releases.

Contract Manufacturing

We also offer Electronic Contract Manufacturing – a service which grew out of a need for quality manufacture of our own products.

Product design by Define InstrumentsWe’ve had many years’ experience in product design – from the conceptual stages, right through to supporting our finished products out in the field. It’s taught us how to avoid many of the pitfalls, and enables us to offer our customers something that not many competing manufacturers can boast:

We’ve been there, done that. We know, first-hand, what it’s like to design a product from scratch, and we understand the challenges of turning a big dream into a practical, ‘manufacturable’ reality.

We now have long-established partnerships with leading New Zealand companies producing their PCB assemblies, and for many years have been successfully helping them to meet their marketing objectives on time, while minimizing procurement and manufacturing costs.

We combine the best people and technology to bring our customers a complete range of services tailored to their needs, from design and prototyping right through to packaged, consumer-ready products:

  • Turn-key sourcing of both components and enclosures
  • SMT and wave soldered electronic assembly
  • Lead-free assembly and assistance with RoHS
  • Mechanical assembly, including mounting
  • Packaging, for consumer-ready products
  • Visual, functional and burn-in testing

Visit us online at to find out more.

Define Instruments - Manufacturing

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