This is the first advanced socket tester that gives a measurement of the earth loop impedance. This is the only safe solution for socket testing, as other testers can indicate as “safe” a socket with a dangerously high earth resistance.

Conventional indicators have the weakness that they only tell if the earth is connected, they don’t indicate how safe it is.

Martindale’s new T-Safe™ patented technology gives safe, earth loop impedance checking within carefully selected bands, without tripping the RCDs.  

• Non-trip earth loop test  
• Voltage test  
• Socket test for open termination and correct wires  
• T-Safe™ patented technology  
• Identifies faults other checkers can’t

This advanced socket tester is an indicator and is not designed to give readings for completing certificates.

See our press release.

Click here for information on safe sockets.

Click here for the Health and Safety Executive information on different types of socket testers