Chamberlain CWA2000 Mailbox/Driveway Alert

I purchased a Chamberlain CWA2000 driveway alert system. There are no external contacts available, so I took it apart to find a way to integrate with ST.

I ended up tying an Ecolink contact sensor in with the indicator LED on the receiver. The LED goes out when the sensor is triggered, regardless of the volume level on the beeper.

*** If someone can make an SmartApp let me know :wink:

were you able to get this working? Thanks