PCW06B socket tester The PCW06B is a reliable and easy-to-use socket tester that is perfect for testing that sockets are wired correctly. It features a standard European earthing plug and can test RCD switches through its RCD test function. In addition, the PCW06B boasts seven different display modes to display the individual wiring states. The device also has a CAT II 300 V rating, making it suitable for various applications. The integrated LCD display allows the user to check the voltage of the socket being tested. In short, the PCW06B socket tester from PCWork is a practical, high-quality tester that is a must-have in any toolbox when it comes to checking the correct electrical wiring of sockets. The PCW06B complies with all EU safety standards and has a CAT II 300 V rating.