so do it, why do you need some damn propietary panel? why subscribe to the traditional alarm paradigm? Just because it's the way it's always been done doesn't mean its the way that is best. You can do ANYTHING that you can do with a proprietary "UL" listed system with a self built system, it's all what quality of stuff you buy and how you set it up. Want wired? Wire it all up, lots of stuff uses NO, NC, dry contacts, etc. nothing proprietary there. All a panel does is give you some buttons to press, why not set up a decentralized system that has multiple nodes, failover, etc. Something you arm with near field tech, geo fencing, keyfobs, etc. etc. You can build a more advanced system that honeywell will ever sell you and not be locked into their garbage, think outside the box. You can buy PIR, laser beams, anything you want.