Air switches serve as the activation point for a sensing edge system. They're connected to a pressurized chamber inside the bottom seal of a door and when the air chamber encounters an obstruction, the displaced air activates the switch, which then sends a signal to the operator to stop or reverse the movement of the door. Switches, hoses, connectors and switch kits come in a range of sizes and configurations to meet the specific needs of different applications.
![Aigis MEP190 Pneumatic Treadle Switch (Per Foot) [Max 10']](https://gateopenersafety.com/store/media/catalog/product/cache/1/small_image/534x/9df78eab33525d08d6e5fb8d27136e95/m/e/mep190.jpg)
