Features:
- A bright flashing LED and loud pulsating beeper indicate local continuity
- Remote continuity – with the use of the remote probe, it does not tie-up two people when identifying and labeling long distance wire/cable runs
- Flashing remote probe – Two lead, bi-color (red/green) LED probe allows a single user to identify up to three wires or cables at a time for correct labeling with only one trip to the other end location – cuts down on multiple trips back and forth
- Polarity verification – Drives a 20mA DC current pulse through the wires or cables under test to the bi-color remote probe; This enables the technician to identify each of the wires under test at the other end of the cable run and eliminates the possibility of false high impedance readings
- Lightweight/Pocketsize – clips on and hangs from the cable(s) under test without falling off
- Dims: 3.6×2.2×1.14″ (90x57x29mm); Wt: 9.2oz (260g)
- Complete with remote probe, test leads with alligator clips, 9V battery and pouch


Extech CT20 Remote & Local Continuity Tester Datasheet