Quickly test RJ-45 and RJ-11 cables. Features LED's for each conductor for individual continuity testing.
Face it, for the value of this tester you can't go wrong. Worth checking to save time troubleshooting later.
Useful tool to show correct phone and network wiring- finds opens, shorts, and miswiring in runs. You will have to do a small fix on the on/off switch. The grease that is used on the switch has gummed up causing it to be frozen. Take the 4 screws off and, with a toothpick, put some vaseline on and in the switch. Flip back and forth several times and you're ready to go. After putting the screws back in, leave the screw under the switch slightly loose to keep it from binding on the case. I'm willing to do a quick fix for the low price. The 'S' position of the switch allows for a slow LED scan. (Not mentioned in instructions)
I have always had the best of service and response from MCM. Highly recommended!