Socket tester with finger contact for active PE error detection and for testing the tripping function of a 30-mA FI/RCD circuit breaker Quick and easy testing of earthed contact sockets, cable reels and extension cables for correct connection. Wiring errors and inadmissibly high contact voltages at the PE connection are indicated immediately. It is also possible to test the tripping function of a 30-mA FI/RCD circuit breaker by pressing the FI/RCD button. Test functions: https://elecena.pl/product/17987247/020053-socket-tester-with-finger-contact 2021-04-28 https://elecena.pl/product/17987247/020053-socket-tester-with-finger-contact 2025-02-08