Bring controlled access to the door with a reader designed for professional security environments. The HID Signo 40, part number 40NKS-T0-000000, is built for badge-based authentication and fits cleanly into access control deployments where presentation and reliability both matter. Its black and silver finish gives it a restrained, modern look that works well in corporate offices, campuses, and secured facilities. For teams standardizing on HID credentials, the Signo 40 supports a polished installation experience while keeping the focus on dependable entry control. This model is a strong fit when the reader needs to do one job well: authenticate credentials at the point of entry with a form factor that looks intentional on the wall or mullion. Compared with lower-tier alternatives, it offers the kind of brand alignment and deployment consistency procurement teams expect in higher-value access control projects.