4 items
Cable testers, toners, and meters that turn guessing into knowing.
Tests coax, twisted pair, and locates runs with remote IDs. The first time it finds a bad punch-down in a 200-drop office, it pays for itself.
Pairs well with: Klein Tone & Probe Kit
View on Amazon Budget pick: Basic RJ45/coax continuity testerFor the office where nothing is labeled and the patch panel is a war crime. Tone one end, wand the other, done arguing with the wall.
Pairs well with: Klein Scout Pro 3 Cable Tester
View on AmazonBefore you touch the mystery wire in the ceiling, wave this at it. Cheap insurance that has saved more techs than any other tool on this list.
View on Amazon"It won't charge" tickets end in seconds when you can see the actual wattage. Also great for catching bad cables before they waste an hour of your life.
View on Amazon