My Simplisafe system was replaced by Simplisafe themselves and I have a ton left over. Note - one of these base systems would not connect and the keypad with it said out of range. The keypad still might work and maybe the faulty base station who knows. But keep that in mind. Not sure which base serial number it was. 23 entry sensors and magnets 3 glass breakers 4 motion detectors 1 siren 2 panic buttons 2 keypads 3 smoke detectors 2 base units One brand new Simplisafe yard sign with stickers!! Have questions? Just ask!!