Geist's door position sensor helps you keep track of whether data center doors are open or closed. You can use a web interface to check the position of the door, or an alarm can be set to provide you with an alert whenever a secure door is opened. Consisting of two main components - a magnet and a switch with terminals connecting the signal wires - the distance between the pieces widens whenever the door is opened. This is how Geist's door position sensor detects whether the door is open or closed. The sensor can be easily hooked up to I/O ports so that it can relay information about the door position.