12VDC 8A (To fit 4 ACU'S) ACCESS-PSU2. This range has been designed by Elmdene to house most common access control door controllers including Paxton and ACT. With different power options and enclosure sizes, this PSU is suitable for a variety of applications. All models offer fault signalling and can charge a 12V standby battery (sold separately) to provide backup power on a mains failure. Multi-fused outputs are provided to allow the installer to protect individual circuits as required. All models possess a mains fail relay output, plus additional Battery Monitoring and Deep Discharge Protection features.. Energy efficient switch mode technology. Battery Monitoring. Built in internal fuse protection. Controllers supplied separately