Each of the gangs or switches above in fig 2 of which there are two work like this fig 3. Two way switching means you can switch the same light fixture from two switches that are located in different sides of a room.

Wiring Diagram 3 Gang Light Switch Wiring Diagram
Wiring a 2 gang 2 way switch uk. The switches at each end are 1 pole 2 way switches. Alternative method of three way switching. There are two wiring options for this. If you are describing this switch to an electrician or electrical supplier you should refer to it as a 1 gang 2 way light switch and. 2 gang 2 way switch wiring diagram wiring diagram is a simplified usual pictorial representation of an electrical circuitit shows the components of the circuit as simplified shapes and the power and signal links in the midst of the devices. 3 gang 2 way smart switch wiring help.
When you switch it one way on or position 1 the com terminal is connected to the l1 terminalwhen you switch it the other way off or position 2 the com terminal connects to the l2 terminal. In position 1 when the switch is down or on com and l1 are connected together just like the one way switchin position 2 when the switch is up or off com and l2 are connected together. Two way switches have a com terminal as well as l1 and l2 terminals. When l1 is on l2 would be off. Wiring a two way switch. The switches at each end are 1 pole 2 way switches.
Uk so this fig 1 is what we call a 2 way switch. Any number of intermediate crossover switches may be added to give three or more switching positions. When l1 is off l2 would be on. 2 gang light switch to a smart light switch. This is an alternative deprecated form see above for the reasons of the multi way switch wiring. Usa single pole 3 gang smart light switch wiring help.
Wiring of smart 1 gang light switch.