Brivo ACS6100 Regular Expansion Chassis (Accommodates four (4) ACS6100 expansion boards) 1 - Regular enclosure with lock 1 - B-ACS6100-PSB internal power supply board (does not support power for electronic locks) 1 - Plug-in AC/DC power adapter 1 - 12v 14Ah sealed lead acid battery backup [Compatible with all Brivo ACS6000/6100 series boards]
