As with the two pin types these need a dedicated lamp holder.

They are aslo known as Dulux SE PLSE lynx SE and biax SE the S standing for single loop E for electronic.

The second set of pins is to allow for dimming control and also for battery power when used as an emergency light, they are much more complex than the 2 pin type.

Again you can select a wide range of colour tones to suit your application.

table lights wall lights downlighter tubes PL ecotone U tubes