- Resistors
- Capacitors
- Diodes
- Transistors
- Short Circuit
- Open Circuit
The octotester gives a visual representation of circuit electrical impedance allowing easy component fault detection.

Short
Short circuit characteristic

Open
Open circuit characteristic

Resistance
Resistance in the trace







Capacitence
Characteristic for capacitance in the trace

Diode
Characteristic of a diode trace

BJT
Characteristic of emitter-base trace

What people
Think of the OctoTester
We asked some of the people we work with to give a reason why the OctoTester works for them, from hobbyists to businesses.
Kieran
"I use the tester everyday to help with fault finding - It has saved me so much time!"
Alex
"This tester saved me hours of work! Plugged it in, and it was ready to go—super reliable and accurate. Highly recommend it!"
Albert
"I've tried other testers before, but this one stands out. It's durable, well-designed, and gives quick readings every time."
Madison
"Worth every penny! It's made my workflow faster and more efficient. I can't imagine going back to the old ways."
Gareth
"The perfect tool for anyone working with electronics. Love how easy it is to use!"













