OSDP Hub - OSDP tool for passively connecting OSDP devices. 7 ports with pluggable terminal block connectors. Ports have OSDP data and power connections. Switches on each port control power and data polarity. Requires 8 - 16 VDC @ 300 mA (current rating is for OSM-HUB only, powering additional devices with the OSM-HUB will require more current). 12 VDC, 1500 mA power supply included. Plastic housing. Overall dimensions of unit: 4.52” x 3.90” x 0.70” (approx).