# Sensors Defining sensors in a SMIL playlist is designed to be robust, future-proof, and human-readable. Below is an example for already integrated Nexmosphere sensors. ## Using Nexmosphere sensors Nexmosphere supports a large number of industry-grade sensors and provides a great response time. ### Read More About Nexmosphere Link to Nexmosphere documentation, website, and other related resources. You can define multiple sensors attached to the the [supported device](https://docs.signageos.io/hc/en-us/articles/4405231196946). ```xml ``` Once you define sensors, you can use them for triggering playlists: ```xml ``` The code above will - trigger ` or ` - whenever the `rfid` antenna (` ``` **Sensor actions:** - `picked` for the action when you pick up the RFID tag from the antenna - `placed` for the action when you put down the RFID tag on the antenna ```xml --> data="5" action="picked" /> ``` ### Buttons [IN PROGRESS] This sensor is under integration; the API might change. **Sensor definition:** This sensor is under integration; the API might change. ```xml ``` **Sensor actions:** - `pressed` once you press the button and keep pressed - `released` when you release the button ```xml --> data="1" action="released" /> ```