Standard IEC power cables can be knocked out of there socket, or become loose. When this happens you might lose control over your lighting, your computer might turn off and lose what you were working on. Its these times that the IEC-Lock is worth having.It also offers many uses in data centres,medical applications and broadcasting enviroments.
It is also simple to use, as its just the same as a normal IEC power cable, but with one big difference. It has a gripping mechanism on the earth pin. So when you plug it in, it holds on tight and won’t let go until you press the red button situated on the plug.A small price to pay for peace of mind.