About this object(i) Metal unit with cover fixed to wall. The cover is screwed onto the unit. There is a hinged, spring-loaded plug cover with a small lug. The power point has 3 round pin sockets. One pin is smaller. Embossed in metal cover: "500 AC ONLY".
(ii) Wall switch on a grey plastic wall plate. The switch is opaque plastic and marked with "ON" and "OFF".
