The Martindale EZ664 gives total socket testing flexibility by being able to connect either to a standard 13 amp plug or via flying leads, ideal when testing at light fittings, fused spurs and terminals.

The EZ664 uses two groups of LEDs to indicate wiring condition, mains voltage level and earth loop impedance. A group of three tricolour LEDs indicate the condition of the wiring at the socket under test or an out of tolerance supply voltage. Pass or fail and fault types are identified from the table conveniently located on the front of the tester.

A key feature of the EZ664 is the ability to check the earth loop impedance of the wiring under test and indicate the measured value in six discrete ranges via three tricolour LEDs. The EZ664 measures the earth loop impedance with a 30mA or higher RCD in circuit without it tripping.

The EZ664 detects and indicates if the mains voltage is below 195V or above 270V or if the neutral to earth voltage is greater than 30V. If the voltage is outside these limits loop impedance measurement will not be made.

The EZ664 includes:

• EZ664 Advanced Socket Tester
• TL207 Test lead adapter (13A plug to 3 x 4mm jacks)
• TL36 Test lead (3 crocodile leads to 3 x 4mm jacks)
• EZ664 Instruction Manual
• Soft carry case