ACU for access control and signal integration with control over 4 readers with 4 door opening relays. Capacity for 100,000 cards. It has 8 alarm inputs and 8 outputs. Includes power supply and support enclosure. TCP-IP (ETHERNET). Possibility of PoE power (Power Over Ethernet). All ASD / 4 models comply with the "Environmental Class III" standard. Grade 2 Access Certified. In PVC enclosure.