Hager Klik 4-Pin Plug-In Ceiling Rose Red with A1 cover. Used to connect luminaires to a fixed wiring installation. Auxiliary contact available, a typical use is for emergency lighting. · · · Used to connect luminaires to a fixed wiring installation · · Sockets have 5 terminations line, neutral, CPC, auxiliary and loop-in · · Plugs have 4 terminations line, neutral, CPC and auxiliary · · Meets BS 6972 and BS 5733:2010 standards