DSC HS2128PCB NEO Printed circuit board only. 8 on-board zonesExpandable to 128 wireless and hardwired zones4 PGM outputs: expandable to 148 (HSM2204, HSM2208)Template programmingConnect up to 16 supervised keypads with keypad zones8 partitions1000-event buffer1000 user codes (HS2128 E), 95 user codes (HS2128)Interconnected smoke detector support with v1.2 allows for additional warning in potential life-threatening situations