Continuity Measurements.

Any multimeter with the ability to test resistance or ohms can measure for continuity. Some meters have an audible buzzer to let you know when you have continuity, while others don’t. You need to keep an eye on the display to watch the reading the tester is giving. Most analog testers you have to watch the screen to see if the needle goes all the way to the right. With the digital meters, some have an audible symbol to let you know if the meter has an audible buzzer or not.
This is the audible continuity buzzer. In most cases, if the reading is under 50 ohms of resistance, the meter will buzz. With other testers, you would just select any of the resistance ranges (Ω) and watch the reading you get on the screen. It should be as close to 0.00 as possible to have the best continuity. Most times you will get something between 0.00 and 0.3 on the display because the meter is picking up resistance in the circuit being tested and in the test leads.
WARNING!!! ALWAYS TEST CONTINUITY ON A CIRCUIT THAT IS SHUT OFF. A live circuit will damage the tester and potentially injure the user.

Old & Current Tester Manuals

We have manuals for many of the meters that are no longer manufactured by us. If you don’t see the manual that your looking for on our website than please email us at the below address with the meters model number in the subject line. If you don’t have a model number than please attach a picture of the unit so that we can try to identify it.

If you see a manual and the link doesn’t work please email us by using the link below.


Can you explain a bit more about the readings of an outlet tester?

Today, with many people looking to do simple wiring jobs at home on thier own, outlet and GFCI testers are becoming more and more common tools in the home owner’s tool box. That being said, many people purchase the tester to inspect outlets or check the work they have done, but they are not 100% sure as to what the tester is telling them.

Below is a picture of the wiring of a standard wall receptacle that you would most likely find in your home. As you see, there are three different wires that should be connected to your receptacle. There should be a black, a white, and a green wire attached securely to each receptacle.


Each of these wires has a different purpose, and are vital to ensure that your appliances that are plugged in are properly powered and grounded, as well as providing you with safe connections for these appliances so that you do not recieve an electrical shock.

Black(Hot)- This is the wire that is carrying the voltage to your appliance. This is commonly referred to as the “Hot” wire because it is the wire that is carrying the voltage.

White(Neutral)- This wire is the wire that allows the voltage to return to your panel.

Green(Ground)- This wire is a safe return for voltage if the neutral doesn’t properly function. This wire allows the voltage and current to return to ground without shocking the user.

Battery Installation for the Cam 10 (Circuit Alert) tool.

The Cam-10 is the circuit alert unit that detects electricity for all of our Circuit Alert tools. This sensor takes two LR44 button style batteries. For a detailed instructional video on the battery installation for the Circuit Alert (CAM-10) unit attached to your tool, please follow this: LINK!

Do you have a tester that can trace romex cable like a wire tracer?

There are a few different tools that we offer for tracing wire/cable in the home or for commercial applications. Regardless of the type of cable all of our units are capable of tracing cable. Each unit has what is called a “tone generator” or a transmitter that sends a tone over the cable that can be picked up by the receiver or “wand”. Below are some of the tools we have that cover this, all of which can be used in either commercial or at home applications.

GB Line:
GET-4220K Lan Tracker

Sperry Line:
ET64220 Lan Tracker
ET65220 ToneProbe