Upgrade your access control system with the HID Signo 20 Reader. This system supports Open Supervised Device Protocol (OSDP) for secure bidirectional communication and is compatible with a variety of technologies. The sleek design allows for flat surface or mullion mounting, and easy management through HID Mobile Access� and HID Reader Manager.Supports OSDP for secure communicationCompatible with multiple technologiesSleek design for easy installation and management