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