The Von Duprin 900-BB Battery Backup Board is designed as an optional add-on for the distribution board of Von Duprin exit devices. This battery backup PCB ensures your access control system remains operational during power outages, providing reliable support for your security needs. Compatible with Von Duprin's AMP power supply, it is a practical solution for maintaining safety and convenience. Enhance your exit device setup with this dependable battery backup board. Don't miss out, secure your Von Duprin 900-BB today and safeguard your system's performance!