The HID Signo Reader 40 is a founding member of the Signo platform. Offering a truly dynamic approach to secure electronic access control, HID Signo Readers are designed to be highly versatile, powerful, and connected for the future.

A perfect fit for door applications requiring wall switch mounting, the HID Signo Reader 40 supports an unparalleled range of different credential technologies in a variety of form factors including cards, fobs and mobile devices.

Key Features

• Highly Versatile - Support for the widest range of credential technologies, including HID Mobile Access via native Bluetooth and Near Field Communication (NFC) capability. Also features Apple’s Enhanced Contactless Polling (ECP) to support credentials in the Apple Wallet.
• Unparalleled Performance - Ultra secure storage of cryptographic keys on certified secure element hardware, plus a new surface detection feature that allows the reader to automatically recalibrate and optimize read range performance.
• Connected to the Future - All readers include out-of-the-box support for Open Supervised Device Protocol (OSDP) for secure bidirectional communication. Each reader is also designed to be connected and managed remotely without “sneakernet” or the need to be physically touched.

Moreover, HID Signo Readers are simple to order and install, making the upgrade process easy for everyone.

The HID Signo 40 Reader represents the next generation of access control technology, delivering unmatched versatility, security, and performance for modern facilities. Designed with a sleek standard profile and convenient pigtail connection, this reader seamlessly integrates into new or existing systems, making it an ideal solution for commercial buildings, enterprise campuses, healthcare facilities, and high-security environments.

Built on HID Global’s advanced Signo platform, the Signo 40 supports a wide range of credential technologies, including 125 kHz proximity, HID iCLASS®, Seos®, MIFARE®, and mobile credentials via Bluetooth® and NFC. This multi-technology compatibility ensures maximum flexibility, allowing organizations to transition from legacy credentials to secure, encrypted smart credentials without replacing existing infrastructure.

Security is at the forefront of the Signo 40 Reader. With support for Secure Identity Object™ (SIO®) data model and advanced encryption protocols, it provides superior protection against credential cloning and unauthorized access. Its future-ready design supports over-the-air updates and evolving security standards, ensuring long-term reliability and compliance in a rapidly changing security landscape.

Engineered for both indoor and outdoor use, the Signo 40 features a durable, weather-resistant construction with an IP65 rating, making it suitable for harsh environments and high-traffic entry points. The reader’s compact mullion-style form factor allows for easy installation on door frames, turnstiles, and narrow mounting surfaces, while its LED indicators and audible feedback enhance user experience and operational efficiency.

For organizations seeking to balance premium HID performance with cost efficiency, pairing the HID Signo 40 with high-quality compatible credentials—such as U.S.-manufactured alternatives—can significantly reduce overall system costs without sacrificing reliability. This makes the Signo 40 an ideal choice for scalable deployments across multi-site operations.

Whether upgrading an existing access control system or designing a new one, the HID Signo 40 Reader delivers cutting-edge technology, flexible credential support, and enterprise-grade security—making it one of the most trusted and future-proof readers on the market today.