ATEN 8-Channel Relay Expansion Box. Channels quantity: 8 channels, Channel type: Relay channel, Supported network protocols: ARP, ICMP, TCP/IP, DHCP, HTTPS, SSH. Power consumption: 300 mA, Power consumption note: DC5V:2.82W:24BTU, DC48V:3.53W:27BTU. Width: 75.8 mm, Depth: 200 mm, Height: 42 mm. Products per master (outer) case: 5 pc(s), Master (outer) case width: 250 mm, Master (outer) case length: 325 mm