The slave sockets are automatically switched on and off according to the device connected to the master socket. Many people may forget to turn off the computer peripherals such as monitor, printer etc after work, maybe you are one of them. Do you know what will happen if you always forget? Firstly, the equipment needs energy even they are in standby; secondly, it will shorten the life; thirdly, it will cause disaster if there is surge in the mid-night; fourthly, inner high temperature for long time may cause fire Lanwei Master & slave power strip make your job and management easy and effective. It’s mainly designed for government, schools and companies. * Save energy, extend the life time of peripherals, easy to control. *High quality raw material: Outer shell：PC+ABS(Heat deflection temperature: 105℃) Cable plastic: 100% new PVC Cable Conductor: oxygen-free copper Socket: high flexible phosphor copper Power: 2500W-10A MAX 250V～ Reponse current: >=420mA Plug with built-in fuse (British plug) Cable length: 1.8M, section area: 0.75 square meters Flame resistant: comply UL94V0 standard