I have a system mounted on a door. I need to know when the door is open and when it is closed. I'm not able to have a switch on the door or modify the room where the door is located in any way. I am looking at your MMA8453QT product as a solution. If the door is opened I need an interrupt sent to a microprocessor and again when the door is closed. This may be overkill but it looks like a good solution. How can I use this or another similar sensor to perform this task?