Visonic Powermax Pro Security System for LARGE HOUSE. 21 Window/Door sensors, 6 glassbreak sensors, 2 passive infrared motion detectors, 3 key fobs (not shown), 2 keypads with holders, 2 power supply cubes (1 not shown), 2 RFID 'tags' (shown), 2 9.6v backup batteries (likely not full capacity anymore), instructions and lots of screws and such. In short, a boatload of Visonic PowerMax stuff. Note, I have NOT tested this particular PowerMax base unit, which I bought as a spare (along with about half the parts shown). My in-service PowerMax unit just died from a power surge and we need to move to a system I can 'see' online, so this older tech has to go. I do NOT recommend installing these if you are not very 'handy'. This is not a simple to install base unit (configuration). Hopefully whomever is seriously considering this stuff already is in the Visonic ecosystem. I will pay shipping (not expedited) to anywhere in the US that USPS or UPS serve.