UK Power & USB Wall Socket   Working voltage: 13A 250V Working temperature -15 to 40 C USB Output: 2A 5V UK 3 pin socket output: 13A 250V Fits any standard back box (minimum depth of 25mm) This device must be installed by a competent person in accordance with the current edition of the IET Wiring Regulations (BS7671) & Building Regulations.   Please read these instructions carefully before commencing with installation. Failure to install correctly will negate the product warranty.   The Dual Power Socket with Dual USB Outlet allows you to charge / power 2x USB devices and 2 other electrical items from one double wall plate. The USB charging sockets are compatible with items such as smart phones tablets and other devices that require charging via a USB port. The USB charging sockets have a total output of 2 amps (combined); if the current exceeds this it will automatically shut down to protect your device.   This dual switched socket will fit any standard dual 25mm deep wall box.