Ermenrich Zing ST40 Socket Tester

The Ermenrich Zing ST40 Socket Tester with a Euro plug and a dedicated button for testing the performance of the RCD (residual current device). The tester is inserted into a socket and provides light indication with three LEDs. The light codes are directly on the body of the device, and there are seven in total: Everything is in or-der; no ground; no neutral; missing phase; phase/ground reversed; phase/neutral reversed; phase/ground are reversed and ground is missing.

The tester is perfect for checking electrical installation work performed on a construction site and assessing the condition of outlets at home. The device has a built-in backlit screen that displays the measured voltage. Does not require additional power.

Key features:

• Voltage measurement, the result is displayed on the built-in screen
• Testing the correct connection of sockets – 7 modes
• Dedicated RCD test button