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). All ASD / 4 models comply with the "Environmental Class III" standard. INCLUDES BATTERY 12VDC 7.2Ah. Certified in intrusion grade 3 + access grade 4. In PVC enclosure.