Linear Power Supplies Securitron Linear Access Control Power Supplies are recommended where an interface with a fire alarm system or battery backup is needed. Securitron BPS Boxed Power Supply Securitron BPS-12/24-1 Dual Voltage Boxed Power Supply Securitron BPSM Self-Monitoring Power Supply Securitron Control BoardSecuritron CCB-8 Control Board Securitron Fire Alarm ResetSecuritron FAR Fire Alarm Reset