Home Alarm Door Sensors on Shabbat

Question:

My home alarm system is off on Shabbat, but whenever I open and close a door that has a sensor, it blinks and sends a message to the alarm panel that a door is open. Is this a violation of Shabbat?

Answer:

If you can turn that part off before shabbos that would be preferred, however if you can’t it is still permitted because nothing is really being effected. The message that is being send has no ramification in any way, and no one cares about it.

Best wishes