Philips SND 57 230-240V 50/60Hz digital igniter can be used with 1 lamp in combination with a ballast that is equal to the connected lamp.
You can connect SON lamps from 50W to 70W to this SND 58 igniter. Lamp is turned off when it is defective. This provides extra life for the ballast and no annoying flickering.
SON-T 70W, SON-T 50W