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This application note shows how to use a Fibaro Universal Dimmer 2 module with a 3-position (On/Off/On) momentary switch.
It is based on a UK style 2-wire lighting system with no neutral at the switch.
A 3-position momentary, or retractive, switch has 3 positions and is also known as an ON/OFF/ON switch.
It normally stays in the central (Off) position, you can then press the top or bottom parts of the switch to move it into the On positions. As this is a momentary (retractive) switch, it only remains in the On state while you press it, it returns to the central Off state when the button is released.
This type of switch provides another way of controlling the Fibaro Dimmer 2 (and the light it is connected to):
The switch and Dimmer 2 module can be connected to the lighting system as follows.
Fibaro Dimmer 2 Parameter Setting:
The following parameters need to be set:
Installing the Fibaro Dimmer modules involve working with 240V mains wiring. If you are not comfortable doing this you should consult a qualified electrician. This application note is provided as a guide, all work is are carried out at your own risk. Vesternet do not accept any responsibility or liability.