System 3000 motion detector attachment 2, 20 m standard System 55 matt gray Features: Automatic switching of lighting, depending on heat movement and ambient brightness. Operation with System 3000 switching, dimming or extension insert 3-wire. Extension of the detection area in combination with extension insert 3-wire. Adjustable brightness threshold. Sensitivity adjustable in four levels. When a System 3000 extension insert with operating attachment or mechanical button is connected to the main unit, the lighting can be switched on or dimmed for the duration of the follow-up time. With System 3000 dimming insert: Switch on with last set brightness or saved switch-on brightness. The switch-on brightness can only be saved permanently using a System 3000 extension insert with operating attachment.