Extron PS 1220EB (part number 70-988-01) — a quarter-rack 12 VDC external power supply and eBUS distribution hub with six ports.

An IPCP Pro processor can power a few eBUS endpoints; a large system needs more headroom. The PS 1220EB provides both the current and the wiring topology in one box: 12 VDC at 2 A, 24 watts, shared across six 4-pole captive screw eBUS ports. Feeding endpoints from a central hub also shortens the total cable run, which matters because the eBUS specification caps a system at 1000 ft of cable however it is arranged. Idle draw is negligible at 0.3 watts, and Extron rates the supply at energy efficiency level V.

Key Capabilities

• 12 VDC, 2 A, 24 watts output shared between all six eBUS outputs.
• Six 4-pole 3.5 mm captive screw eBUS control ports.
• Universal 100-240 VAC, 50-60 Hz input.
• 0.3 watt no-load draw; 28.5 watts and 0.6 A maximum at full power.
• Meets energy efficiency level V.
• ZipClip 200 mounting clip included for rack rail, desk, lectern or pole.
• Quarter-rack width: four units fit on a single 1U rack shelf.

Where It Is Used

Deployed in racks, under tables and on lectern shelves in divisible classrooms, boardrooms and multi-room facilities where a run of eBUS button panels, partition sensors and volume controllers needs more power than the control processor alone can deliver.

Specifications at a Glance

• eBUS pin configuration: +V = +12 VDC, +S = + signal, -S = - signal, G = ground
• Enclosure: high impact, high temperature plastic, 1.7 in H x 4.3 in W x 4.5 in D
• Product weight: 0.8 lb (0.4 kg); shipping weight 3 lbs (2 kg)
• Safety and EMI/EMC: CCC, CE, C-tick, c-UL, CISPR 22 Class B, CISPR 24, FCC Class B, NEC Class 2, PSE, S-mark, UL
• Program control: Extron Global Configurator Professional or Global Configurator Plus

Also referenced as Extron PS1220EB, PS-1220EB, part number 7098801.