This pneumatic timer switch features double contacts and can be fully customised between 5 seconds and 5 minutes. To adjust the timer function use the timer screw on the rear of the product and adjust it either clockwise (increase the time) or anti-clockwise (decrease the time). While in operation the plunger switch will slowly reset to its default position and when pressed may occasionally make a small flash of light. It is suitable for the following lighting technologies LED (3A) Incandescent (6A 0-240V) CFL and Fluorescent (3A 6 lights maximum).