Socket Testers & Adaptors

  1. Martindale CP501 13A Electrical Socket Tester MARTST1
    Martindale logo
    In Stock
    Martindale CP501 13A Electrical Socket Tester MARTST1
    (2)
    £15.48 £12.90
    • Special design for quick installation and removal
    • Straightforward and quick to use
    • Lightweight and portable
    12 Reward Points
    Price Match Guarantee
    MARTST1
  2. Martindale BZ101 Buzz-IT 13A Electrical Socket Tester c/w Buzzer
    Martindale logo
    In Stock
    Martindale BZ101 Buzz-IT 13A Electrical Socket Tester c/w Buzzer
    (7)
    £16.08 £13.40
    • Fast and easy
    • Audible signal
    • Three LEDs
    13 Reward Points
    Price Match Guarantee
    MARTST2
  3. Martindale SB13 SafeBreak R2 Socket Test Adaptor See SS130
    Martindale logo
    3 In Stock
    Martindale SB13 SafeBreak R2 Socket Test Adaptor See SS130
    (2)
    £18.00 £15.00
    • Test all wall socket plugs and outlets
    • Take quick R1 and R2 measurements
    • Compatible with any meter that has a 4mm plug
    15 Reward Points
    Price Match Guarantee
    MARSB13
  4. Martindale CP520 240V Socket Tester with Earth Socket
    Martindale logo
    Lead Time: 1-6 Days
    Martindale CP520 240V Socket Tester with Earth Socket
    (no reviews)
    £23.99 £19.99
    • 4mm earth connection
    • Guarantee good earth
    19 Reward Points
    Price Match Guarantee
    MARCP520
  5. Martindale EZ165 Advanced Socket & Non-trip Earth Loop Tester
    Martindale logo
    4 In Stock
    Martindale EZ165 Advanced Socket & Non-trip Earth Loop Tester
    (no reviews)
    £48.00 £40.00
    • Capable of detecting twenty-eight fault conditions
    • An advanced socket tester as defined by the Health & Safety Executive
    • Verifies earth wiring using a non-trip earth loop test
    40 Reward Points
    Price Match Guarantee
    MARTST4
  6. Martindale CP201 250V Industrial Check Plug
    Martindale logo
    4 In Stock
    Martindale CP201 250V Industrial Check Plug
    (no reviews)
    £50.40 £42.00
    • Simple to use; just plug it into any socket
    • Fitted with a standard blue pin plug
    • LED lights show you if there is a problem
    42 Reward Points
    Price Match Guarantee
    MARCP201
  7. Martindale CP301 110V Industrial Socket Tester
    Martindale logo
    2 In Stock
    Martindale CP301 110V Industrial Socket Tester
    (1)
    £52.80 £44.00
    • 110V industrial plug connector
    • Shows wiring status using LEDs
    • Essential for industrial applications
    44 Reward Points
    Price Match Guarantee
    MARCP301
  8. Martindale BZ701 Audible Socket Tester with Mains Polarity Check (240V)
    Martindale logo
    Lead Time: 1-6 Days
    Martindale BZ701 Audible Socket Tester with Mains Polarity Check (240V)
    (no reviews)
    £58.80 £49.00
    • Indicates twenty-eight different fault conditions
    • Super bright LEDs
    • Determines correct and incorrect polarity of the incoming mains supply
    49 Reward Points
    Price Match Guarantee
    MARBZ701
  9. Martindale 3-Phase Industrial Socket Tester - 4 Pin, 16A
    Martindale logo
    Lead Time: 1-6 Days
    Martindale 3-Phase Industrial Socket Tester - 4 Pin, 16A
    (no reviews)
    £87.00 £72.50
    • Multiple LED indication of phase status
    • Suitable for use in 16A/3P + E sockets
    • Four-pin plug
    72 Reward Points
    Price Match Guarantee
    MARPC104/16
  10. Martindale EZ365 Advanced Socket Tester
    Martindale logo
    Martindale EZ365 Advanced Socket Tester
    (no reviews)
    £88.80 £74.00
    • Verifies the earth wiring
    • Advanced Socket Tester
    • Detects 28 socket wiring fault conditions
    74 Reward Points
    Price Match Guarantee
    MARTST5
  11. Martindale 3 Phase Industrial Socket Tester - 4 Pin, 32A
    Martindale logo
    Only 1 In Stock
    Martindale 3 Phase Industrial Socket Tester - 4 Pin, 32A
    (no reviews)
    £95.94 £79.95
    • Suitable for use with 32A/3P + N + E sockets
    • Four-pin plug
    • LED indication of socket status with reference guide
    79 Reward Points
    Price Match Guarantee
    MARPC104/32
  12. Martindale 3 Phase Industrial Socket Tester - 5 Pin, 16A
    Martindale logo
    2 In Stock
    Martindale 3 Phase Industrial Socket Tester - 5 Pin, 16A
    (1)
    £95.94 £79.95
    • Five-pin connector plug
    • LED indicators
    • Detect phase status, neutral and more
    79 Reward Points
    Price Match Guarantee
    MARPC105/16
  13. Martindale 3 Phase Industrial Socket Tester - 32A, 5 PIn
    Martindale logo
    2 In Stock
    Martindale 3 Phase Industrial Socket Tester - 32A, 5 PIn
    (2)
    £99.00 £82.50
    • Five-pin plug
    • Built for use with industrial 3 phase equipment
    • LED indications of phase status
    82 Reward Points
    Price Match Guarantee
    MARPC105/32
  14. Martindale Extension Lead Tester
    Martindale logo
    Martindale Extension Lead Tester
    (no reviews)
    £126.00 £105.00
    105 Reward Points
    Price Match Guarantee
    MARLTDVR
  15. Martindale EZ650 Socket Tester Kit with Earth Loop Test
    Martindale logo
    2 In Stock
    Martindale EZ650 Socket Tester Kit with Earth Loop Test
    (1)
    £138.00 £115.00
    • Measures earth loop impedance of up to 500 ohms
    • Uses a simple system of lights to indicate problems with the socket
    • Tester and accessories housed in a durable carry case
    115 Reward Points
    Price Match Guarantee
    MARTEZ650
  16. Martindale MARLTDV Extension Lead Tester
    Martindale logo
    Lead Time: 1-6 Days
    Martindale MARLTDV Extension Lead Tester
    (no reviews)
    £138.00 £115.00
    115 Reward Points
    Price Match Guarantee
    MARLTDV
  17. Martindale 3 Phase Industrial Socket Tester - 63A, 4 Pin
    Martindale logo
    Martindale 3 Phase Industrial Socket Tester - 63A, 4 Pin
    (no reviews)
    £149.40 £124.50
    • Suitable for use on 63A/3P + E sockets
    • 4-pin connector
    • LED indicators
    124 Reward Points
    Price Match Guarantee
    MARPC104/63
  18. Martindale 3 Phase Industrial Socket Tester - 5 Pin, 63A
    Martindale logo
    Only 1 In Stock
    Martindale 3 Phase Industrial Socket Tester - 5 Pin, 63A
    (no reviews)
    £154.80 £129.00
    • Suitable for use on 63A/3P + N + E sockets
    • Five-pin plug
    • PE presence, phase presence and more
    129 Reward Points
    Price Match Guarantee
    MARPC105/63

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About Socket Testers & Adaptors

Socket testers are an essential part of any electrician's toolkit, and allow users to quickly and easily evaluate the internal wiring of a socket without the need to remove the socket faceplate and potentially cause damage to the installation.

Generally extremely cost effective and cheap, socket testers are also incredibly simple to use, and require the user to simply insert the tester into a socket and the tester will do the rest. Depending upon the type of socket tester used the way information is communicated will be different; some socket testers use LED indicators to show wiring status, while others use the audible indication to show correct wiring/problems with the installation. Some also use a combination of audible and visual indicators, allowing users to quickly tell if there's a problem with a socket or not.

The visual indicators of socket testers are perhaps the handiest part of the tester. These often come with exact representations of what's wrong with the wiring, so if live earth was reversed, for example, the tester would illuminate with a combination that denotes this problem. Most socket testers also include a handy reference guide on the front so users can determine what exactly the different LED indicators mean.

This section also contains socket adaptors; these differ from socket testers as they are designed generally to be inserted into a socket and the user then uses another tester such as a multimeter and a set of test leads to carry out socket testing. They can also include socket testers attached to specific plugs, such as those plugs used in industrial applications.

Most socket testers and adaptors available in-store come with standard UK three-pin plug connectors (except if they are designed for specific sockets such as the aforementioned industrial sockets).

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