The SMJ S4ISSC converts 1 socket to 4 and is fitted with individually switched sockets all of which feature a power and surge indicator neon. The three channel surge protection will activate during a power or mains surge, protecting your electrical items and is therefore ideal for home TV and audio equipment, power tools and portable devices. This product has been designed to fully comply with the latest British standards and electrical equipment safety regulations. It comes complete with wall resting screws for a secure and safe connection when items are plugged in.