Based on this product's specifications, here are some alternatives and similar models
Buffer Power Supply No name AD-155A, model AD-155A
Summary description:
Buffer power supply No name AD-155A is a standby/backup power unit designed to provide uninterrupted power to connected devices during mains interruptions. Identified by model AD-155A (MPN AD-155A, EAN 5901643192044), it’s suitable for small electronic systems, CCTV, routers or access control equipment requiring temporary power hold-up. Use for short-term backup and power stabilization.