Martindale TEK404 Continuity Tester
Trusted by Professionals
Martindale Electric on Facebook Martindale Electric on Twitter Martindale Electric on Linked In Martindale on YouTube

Martindale TEK404 Audible & Visual Continuity Tester

Martindale TEK404 Audible & Visual Continuity Tester
general image
Martindale TEK404 Audible & Visual Continuity Tester
general image
Martindale Part No: MARTEK404

The TEK404 is a compact continuity tester with both audible and visual indicators. The tough design makes it ideal for commercial and industrial environments. It has the added benefit over the TEK402 that its enhanced safety rating means that it is suitable for use in BS EN61010 CAT II and CAT III locations. Safety features also include an audible warning if accidently connected to live circuits >30V AC.

The loud 85dB buzzer makes it ideal for use in noisy environments where many continuity buzzers, multimeters or 18th Edition multifunction testers cannot be heard.

There is a convenient belt clip and the TEK404 is supplied with CATIII 1000V rated TL47 test leads.

CAT 111 1000V 

Probe Voltage
  • 9V DC approx

Test Current

  • < 50A across short circuit

Continuity Range

  • 2.2kΩ +/- 10%

Audible Output Level

  • 85dB minimum at 30cm with 0Ω continuity resistance

LED Indication

  • Bright Orange LED, buzzer and LED intensity reduce with increasing continuity resistance

Alarm Function

  • Pulsed buzzer & LED indication if unit is connected to live circuit voltage >30V AC or >30V DC +/- 20V

General Specifications

  • Ingress: IP40
  • Power Supply: 9V, MN1604 / PP3 alkaline battery
  • Compliance: BS EN61010-2001, CAT III 600V overvoltage
  • Dimensions: 50 x 64 x 30mm
  • Weight: approx 260g
  • Belt Clip: On rear face
  • Supplied with test leads (TL47), insulated croc clips & MN1604 battery
Print    Bookmark    Manual     Datasheet   
general image
general image
Metrohm - a Martindale Brand
Drummond - a Martindale Brand
Luckins Logo - Martindale is listed in Luckins Live Martindale Electric Co Ltd, Metrohm House, Imperial Park, Imperial Way, Watford, Hertfordshire, WD24 4PP
Company Registration No: 3387451. © Martindale Electric Co Ltd 1997 - 2019, all rights reserved.
T: +44 (0) 1923 441 717   F: +44 (0) 1923 446 900   E:
E. & O.E. Privacy Notice | Terms & Conditions | Contact Us