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In this case its a plug; The PumPing Tap is a spring-loaded socket that ejects a plug when the appliance is switched off. What this means is that residual power is being conserved and wastage of electricity, curbed. So when you finish using an appliance or device and turn its power off, but havent unplugged the device, a ring of light appears on the socket. Ten minutes later, the socket automatically ejects the plug; just like toast popping up from a toaster!
Xiaoneng Jin Xiaolong Lou Ji Lin Shengqiao Zhang