Non -proprietary means any company can work on it ,not just and only one.
Think of it this way.
Someone installs something in your house.
The only one who can fix it is the one's who installed it.
So you are stuck with that company.
Then say that company wants to charge you more money then the others,but the others can not properly troubleshoot the unit.
You are then caught in the net of that company and their prices.
The big four is a farce.They are all the same,cutting back people,putting out crappy equipment.
I'm sorry,but I'm going on a rant.
And then they design certain fixtures and such to fail,blaming it on abuse when it's not.
So they charge the customer to upgrade to vandal proof fixtures,meaning hall buttons and car buttons.
26 years in the biz,and going downhill quick.
The guys,the techs,are of great quality,it's just the companies holding us back from doing our jobs.Overloading us til we break.
I will stop my rant now and move on.
