PL-S and S Dulux lamp bases

Fitting PL-S 2Pin (G23d) and PL-S 4-pin (2G7) There is a fundamental difference between these two lamps. One is for conventional ballast (2pin) and the other for an electronic ballast (4-pin) and are NOT interchangeable!

Fitting PL-S 2Pin (G23d)
Fitting holder PL-S 2Pin


Fitting holder PL-S 4-pin