STANLEY Garage Door Opener 49222/36850 Limit Switch Kit The 49222/36850 limit switch will replace the obsolete (red, blue and black) 49222 limit Compatible with all Stanley screw drive garage door openers that have safety sensors. NOTE The 49222 limit included both limits and wire. The new part 36850 limit switch is sold individually and includes a short length of wire to splice into existing wire and the connectors to do so. If you need to replace both limits, order two. Compatible with Stanley garage door openers from 1993 to current.