The Extech CT40 is a professional cable identification and troubleshooting kit that enables a single technician to remotely identify and trace up to 16 individual wires or cables without power interruption. It combines a transmitter with 16-channel LED indicators and a receiver/multimeter with a 2-digit blue LED display. Ideal for electricians, telecom installers, and maintenance teams working on complex wiring systems in panels, conduits, or building infrastructure.
- Identify and trace up to 16 unpowered or live cables remotely
- Transmitter features 16 red LED indicators (one per line) + ground reference
- Receiver doubles as a full-featured digital multimeter (DMM)
- Measures AC/DC voltage (up to 600V), current (up to 200mA), and resistance (up to 20MΩ)
- Diode test and continuity beeper with audible tone
- Wire voltage check: 5–16VDC for line verification
- Data Hold and Max Hold functions
- Auto power-off and low battery indicators on both units
- CAT III 600V safety rated for industrial use
- Includes transmitter, receiver/multimeter, test leads, alligator clips, batteries, and pouch case