So you seem to have a 1 gang 2 way switch at top and bottom of stairs. 1 way onoff from single position 2 way onoff from 2 positions intermediate onoff from 3 or more positions.

Wiring Diagram Two Way Light Switch Wiring Diagram Source
2 gang 2 way switch wiring diagram. Single gang 2 way light switch. Monday at 352 am. 2 gang 2 way light switch. Wiring of smart 1 gang light switch. Uk wiring 2 gang switch sonoff wifi switch. 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.
3 gang 2 way light switch. 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. This diagram shows two switches in the same box with a separate 120 volt source feeding each. In this video you will be guided from installation to the actual wiring and testing. Wiring a 2gang single switch is a simple and easy way to do. Each of the gangs or switches above in fig 2 of which there are two work like this fig 3.
Three wire cable is supplying the source for the switches and the black and red wires are each connected to one switch. 3 gang switch wiring. 2 gang 1 way light switch. You have an incoming hot wire black going to one screw it does not matter if you use the brass or silver screw on the side of the 2 way switch and a black wire from the other screw on the 2 way switch going to the load light ceiling fan etc. Two way light switching 3 wire system new harmonised cable colours showing switch and ceiling rose wiring. Notice the black wire is the only wire that we are controlling through the 2 way switch.
Advice on wiring 4. Schematic and actual wiring diagram is also. Usa single pole 3 gang smart light switch wiring help. Gang how many switches on the faceplate ie 2 gang 2 independant switches of any sort ie 1 way or2 way or intermediate. Wiring two switches in one box with 2 sources. 3 gang 1 way light switch.