
Using your Lisle 28400 Heavy Duty Tester for low-voltage circuits is straightforward. Here's a step-by-step guide to help you: First, unpack the tester and visually inspect it for any damage. Then, familiarize yourself with the tester's components, including the probe, handle, and cord. To begin testing, connect the alligator clip to a reliable ground point. Next, carefully insert the probe into the circuit or component you intend to test. Ensure the circuit's voltage falls within the tester's 0-12 volt range for accurate readings. If your tester has a power button, switch it on. Observe the tester's display or indicator for voltage readings. For practice, test various components like lights and connections. Once testing is complete, remove the probe and the alligator clip. Store the tester in a safe place when not in use. Regularly test your Lisle 28400 on known good circuits to confirm its functionality. For detailed instructions and safety information, consult the user manual that came with your Lisle 28400 Heavy Duty Tester.


