Lighting control with multiple locations, most commonly used stair marches and long corridors.
Fig. 1. The scheme of lighting control multiple switches
Fig. 2. The appearance of the switch
Diagram wiring lighting control on three sides, consists of switches on two areas SA1, SA3, when the switching switch power supply from one managed system to another.
Between them is mounted intermediate switch SA2, when switching it changing the connection scheme is managed lines without electrical discontinuity.
Due to the switches SA1, SA3 has an electrical gap, intermediate the switch for changing the connection scheme is managed lines (phasing, polarity) in one position enables and disables the lamp EL1.
To control lighting from more than three parties need apply additionally, the intermediate switch, the number of which depends on the places control the flight of stairs, corridor (floors, cabinets).
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