NHS & Schools: COVID-19 Product Discount
All Extech Products

Extech CT40 Cable Identifier/Tester Kit


This product is no longer available

or Call 01642 931 329 to discuss alternatives

Easily troubleshoot electrical and electronic circuits and identify up to 16 local/installed lines with this Extech cable identifier kit.

The system consists of both a transmitter and receiver which can be used for wire identification of an individual core to the end of a multi-core cable. This system also functions as a digital multimeter and can measure AC/DC voltage, AC/DC current, resistance and perform continuity/diode checks.

The supplied transmitter contains 16 line connector, allowing identification of up to 16 wires simultaneously. This works in tandem with the included multimeter and receiver to perform comprehensive tracing, electrical measurements and wire voltage checks from 5 to 16V DC.

Additional functions of this system include a data hold function which temporarily freezes a value on the screen and MAX value calculation.

Extech CT40 Cable Identifier Key Features

  • Troubleshoot electrical/electronic circuits and identify up to 16 local or installed lines
  • MultiMeter functions include: AC/DC Voltage and Current, Resistance, Diode, and Continuity
  • Transmitter/Receiver enables one person to remotely identify up to 16 wires
  • Wire voltage check from 5 to 16VDC
  • Data Hold and Max Hold, Auto power off
  • Low battery indicator (transmitter and receiver)

What's Included?

  • 16-line Transmitter
  • Multimeter/Receiver
  • 2 x 9V Batteries
  • Pouch Case
  • 2 x AAA Batteries
Part CodeCT40

Extech CT40 Technical Specifications

Max Input Voltage 600V AC/DC
Diode Test Test Current 1mA max, open circuit voltage 1.5V typical
Continuity Check Audible threshold between 15Ω and 200Ω
Display 2000 count 3 ½ digit LCD
Overrange Indication LCD displays OL
Polarity Minus (-) sign for negative polarity
Low Battery Indication BAT symbol indicates low battery condition
AC Response Average responding
AC V Bandwidth 50 to 60Hz
Auto Power Off 15 mins (approx)
Fuse mA, μA ranges: 0.2A/250V fast-acting fuse
Batteries 9V battery and 2 x AAA batteries
Operating Temperature 0 to 40°C (32 to 122°F)
Storage Temperature -10 to 50°C (14 to 122°F)
Weight 308g (10.8oz)
Size 162 x 74.5 x 44mm (6.3 x 2.9 x 1.7")
Standards IEC61010-1 CAT III-600V Pollution Degree II, CE approved
Display 2 x red LED lamps
Alligator Clips 17"
Cable Resistance 30kΩ max
Power 9V battery
Power Current 1.8mA
Display Two digit blue LED display
Power 9V battery
Power Current 23mA
Continuity Test Audible threshold between 15 and 1000Ω
Cable Voltage Check 5V to 16V DC
1 Reviews
Overall Rating

Write a Review

Write Your Own Review
You're reviewing:Extech CT40 Cable Identifier/Tester Kit
Your Rating

Subscribe to our Newsletter

International Enquiry