Megger MST220 Audible Socket Tester

The Megger MST220 Socket Tester is a plug-in style tester that uses both a visual and audible indication to provide a quick and easy indication of possible wiring errors which may be present at UK BS1363 13 A 3-pin power sockets. Over 17 combinations of wiring faults can be identified including missing wires and incorrect or reversed connections.

Correct wiring configuration is indicated by 3 bright green LEDs and a continuous tone. A combination of green, red, and amber LEDs with a warble tone indicates a wiring fault that requires further investigation. Reference to the included table will indicate the particular wiring fault present.

The MST220 can be used for the initial identification of socket faults following socket replacement or re-wire work of any kind. Simple miss-wires or missing connections can be quickly identified before the full BS7671 electrical inspection and test, so saving time during the testing and certification process.

The MST220 may also be used during the installation or commissioning of electrical equipment connected to 13 A sockets (such as white goods) if a wiring fault is suspected.
Note: The MST220 will not detect neutral-earth reversal.

Box of 10 Socket testers MST220 (only available as a box of 10).

Key Features

• Simple and effective identification of faulty wiring at sockets
• Tri-coloured LEDs for instant error reporting and fault diagnosis
• Audible indication of correct and incorrect connections
• Identifies 17 missing wires and wrong connection combinations
• Easy to use
• Rugged and reliable