Adding a light switch – remote control?

Our house has a number of places where a room light is only controlled from one switch where it’d be nice to have a switch at both entrances. I know normally you’d do this be adding wiring to allow 2 switches to control 1 light, however I’m looking for alternative ways that don’t require adding wires (as access to some of the switches is very limited so pulling cables would be a pita).

I know you can get light switched that can be remote controlled. However all the ones I’ve seen so far a controlled by ir remote controls or key fob type radio remotes. Are there any systems that allow for the existing switch to be changed to a switch with receiver* and then use a dummy switch (battery powered I guess) to activate it? I.e. make the light appear to have 2 normal switches when 1 is infact a radio remote.

* or wire a receiver into the standard switch as second switch would be.

And if there isn’t such a thing, get on Dragons Den quick!

They do exist, not sure where you would get one that works over here. eg http://www.rewci.com/conbuilinlig.html#

Looks like I missed a very obvious one.

This in the existing light switch:

http://www.maplin.co.uk/remote-controlled-switch-convertor-510524

and this where I want a light switch

http://www.maplin.co.uk/wall-switch-remotes-510550

Have a look at MK Electric’s echo system. Not only is it wireless but the switches use energy harvesting technology, no requirement for batteries or mains power. The switches can be (surface)mounted anywhere. Handy if you have glass walls

echo system looks alight, it a bit pricey. Having looked around it appears that there are not that many systems that like CFL or LED bulbs which is a pain.

nixie, yes echo can have a bit of a big upfront price. However, think about the type of installations that can be done where huge savings can be made in reduced & simplified wiring and not having to do things like channel solid walls or partitions to run cables to switches. It’s the ease of installation where the economics work out. Obviously you still need to gain access to the area where the power cables to the lights are in order to fit the receiver switching units.

I think you can get a remote control hand held unit as well.

I just really like seeing how energy harvesting technology has moved on. The act of pressing the switch generates enough power to send a signal.