This is related but sort of off topic, let me know if I should have this somewhere else.
I would like to incorporate a 821lm to a Liftmaster 595 sliding gate operator. My plan is to use 828ML gateway, 821lm and a 312HM receiver. I have a wifi connection and a plug outlet at the gate. My question is regarding the door sensor, is there something I can use to replace (or add to) the tilt sensor in order for this to work with a slide gate. Let me know your thoughts. Thanks!