Network Cable Tester Wire Tracker Line Finder RJ11/RJ45 Emitter + Receiver

Works perfectly when RJ11 RJ45 cable is on power. Battery(NOT Included) : Emitter: 1 6F22/9V Battery; Receiver: 1 6F22/9V Battery. Emitter Size: 12.6 6.4 3cm / 4.96 2.52 1.2in. Emitter Weight: 90g / 3.2oz.

eBay