I have a light at the top of my stairs with a switch and the bottom and the top of the stairs. I want to be able to control the light from both switches and use x10. What equipment would I need and would I need additional wiring ?
You can use X10-4206
This Scene Wall Switch can store up to 31 X10 command on each button.
That mean you can store , A1 , C1 , D3 , B5 on the button.
When you turn the button "ON", it will send out A1 ON , C1 ON , D1 ON , B5 ON
So this Scene Wall Switch can solve the two way switching problem.
For example :
At up-stair , you have one X10-2222 , Single Button Dimmer Wall Switch. And that wall Swith connect to one of the Light and assign the address as B6
At down-stair , install X10-4206 , assign one of button to send out B6.
So you can use two wall switch (Upstair and Downstair) for control same light.
1) No extra wire between that two wall switch
2) You can store up to 31 address for each button
1) X10-4206 need neutral connection.