I have been helping to refine a IP controlled light switch. It is now live on Kickstarter. It works as a touch light switch, can be controlled by an existing light switch and mounted behind it, it can be mounted in a light box for remote control.
Please have a look
https://www.kickstarter.com/projects...p-light-switch
Please have a look
https://www.kickstarter.com/projects...p-light-switch