Linear PS124D-UP4 Field Upgradeable Kit for PS124 Series, 12/24VDC, Output Power and Battery Charging Board

Upgrade your PS124 power supply to deliver dependable, flexible power for access control, security and surveillance systems. The Linear PS124D-UP4 field-upgradeable board converts PS124 series units into a fully featured power distribution and battery charging solution. It provides four individual aux outputs, each selectable for 12 or 24V to support a range of locks, sensors and monitoring devices, while PTC resettable fuses protect circuits and reduce maintenance by eliminating fuse replacements. Two dedicated access controller power outputs power dual controller modules in one enclosure, and the on-board battery charger supports backup batteries for uninterrupted operation. A fire-release input lets the system automatically release doors on alarm to aid safe egress. Designed for installers and facility managers, this Linear battery charging/output upgrade board streamlines wiring, enhances system reliability and supports surveillance and monitoring equipment with consistent, protected power. Ideal for retrofit projects or new builds—upgrade your PS124 today to strengthen access control and life-safety performance.

• Simplifies power distribution for access control and security systems with four individually selectable 12/24V aux outputs
• Protects devices and reduces downtime using PTC resettable fuses—no blown fuse replacements needed
• Adds dedicated power for two access controllers in a single housing, simplifying installations
• Integrated battery charging for up to two backup batteries ensures reliable standby power during outages
• Fire-release input enables safe egress by releasing doors on alarm, meeting life-safety requirements