# Limit Switch ![](https://phabricator.purduesigbots.com/file/data/e6uhtyrngcdmk4rf26js/PHID-FILE-vb2juqo4kc7k2gsoeeea/limit_switch-300x300.jpg) The limit switch is also a digital sensor (returning 1 or 0) and acts very similarly to the [bump switch](/vex-electronics/vex-sensors/3-pin-adi-sensors/bumper.md). When the little metal lever is up, as in the photo above, it returns a value of 1, when the little metal lever is depressed, it gives a value of 0. Like the bumper switch, the limit switch is also easy to use and quite reliable, but fragile (otherwise known as “flimsy”). You don’t want to put this sensor in a place where it can get entangled with other robots or on a robot appendage that will hit things hard. If you did, you’d probably have to replace this sensor at the end of every match. This sensor requires only a tiny amount of force to trigger it, as compared to the bump switch. ## Teams Contributed to this Article: * [BLRS](https://purduesigbots.com/) (Purdue SIGBots) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.purduesigbots.com/vex-electronics/vex-sensors/3-pin-adi-sensors/limit-switch.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.