This is the router lift that I use.The attached picture is the top of my router table.You can see a small hole in the router plate that is used to raise or lower the router.I use a M12v..
http://shop.woodcraft.com/Woodcraft...alse&mscssid=B099BB8321CE462FB11D783BA6C569EE
http://shop.woodcraft.com/Woodcraft...alse&mscssid=B099BB8321CE462FB11D783BA6C569EE