I recently purchased this Multi-function Automotive Circuit Tester from Amazon, and I'm pleased with its performance. The device is easy to use and has a variety of useful features, including continuity testing, voltage polarity testing, and short circuit detection. The built-in flashlight is a nice touch, making it easier to work in dark spaces. The tester is simple to operate, and the LCD display is clear and easy to read. The long leads (14.7ft) are convenient for reaching distant areas. I appreciate the 1-year warranty and 30-day return policy, which provides peace of mind. Overall, this circuit tester is a valuable tool for any car owner. While it may not be suitable for all AC and high-voltage applications, it's a great addition to any toolkit. I recommend it to anyone looking for a reliable and convenient automotive circuit tester. Pros:- Easy to use & Multiple functions Built-in flashlight Long leads Clear LCD display Good warranty and return policy Cons:- Limited voltage range (3.5V-36V) Not suitable for all AC and high-voltage applications

Very easy to use and the quality is good as well

I haven't used it in practice yet but I tested it with a 12V source against a multimeter. This device reads 11.8V while the multimeter reads 12.21V, connected to the same source. With this device hooked to the same power source, I hooked the multimeter to receive power from it. I tested sending positive and negative to the multimeter. With a ground, the multimeter reads 0V and with power it reads 12.2V. Both are as expected. I'm giving it 3 stars because of the incorrect input power reading. I'm still going to need a multimeter to confirm the input power is correct before using it. However, being able to test if something has power or ground and being able to send power or ground with the click of a button will make this little device pretty useful. I'll update this rating after the first real world use.

Works great wish I would have bought one years ago.

The wire gauge and materials were very solid. So far it was pretty accurate too when I tested my battery voltage. The clips can be stronger though since I had to reclip it twice. Also, I wish it came with a storage bag. But otherwise good value.

I have not used this yet because there has not been a need for it, but I did verify that it works and its build quality. It seems like a solid unit and for the price it looks like it will be very useful when the time comes.

This circuit tester helps identify and diagnose short circuits ,broken wires and poor contacts. The probe has a built in light. It's easy to use and gives reliable ,accurate results. It's definitely something you should have. It's a great value for the price