The simplest, safest and most efficient method of checking 16A sockets in factory or on-site installations. Shows similar fail-safe indications to the Martindale classic check plug.

The simplest, safest and most efficient method of checking 16A 2P+E BS4343 sockets
Intended for use on industrial 240V sockets whilst the 110V check plug will check centre tapped 110V supplies
Both the 110V and the 240V Check Plug are fitted with a standard BS4343 16A plug
Fault conditions displayed on three neons on the 240V checker and on three LEDs on the 110V unit
Both Check Plugs list fault conditions and their associated indications on the face of the unit

Although a 110V Check Plug will show the correct connection of the centre tapped line, it cannot verify that an earth is connected.