HID 921NSNNEK20000 RK40 iCLASS SE Smart Card Keypad Reader, No 125 kHz Support, 13.56 MHz Supports iCLASS Seos cards, and Mobile IDs via NFC, Wiegand, Pigtail, Standard and Mobile Ready, Black

Deliver secure, modern access control at entry points with the HID Global RK40 iCLASS SE smart card reader. This smart reader combines encrypted Secure Identity Object (SIO) protection and OSDP communications to reduce cloning and eavesdropping risks, giving facilities managers stronger assurance for security and monitoring. Support for 13.56 MHz iCLASS SE Seos credentials plus NFC mobile IDs lets employees use cards, tags, or smartphones—simplifying user experience while enforcing multi-factor authentication. The RK40 mounts in mullion or gang-box applications and measures just 3" x 5", ideal for retrofit and high-density installations where space is limited. With Wiegand host interface and pigtail wiring, integration with existing access control panels is straightforward, lowering install time and system disruption. Designed for indoor/outdoor use in a professional black finish, the reader meets the needs of corporate campuses, healthcare, education, and critical infrastructure that demand reliable, resilient security equipment. Add HID Global RK40 readers to your access control strategy to improve surveillance, reduce credential risk, and streamline daily operations—order now or contact sales to plan your deployment.

• Strengthen perimeter security with encrypted SIO and OSDP communications for tamper-resistant credential exchange.
• Enable mobile and contactless access using NFC and 13.56 MHz iCLASS SE Seos support for convenient multi-factor authentication.
• Flexible installation in mullion or gang-box mounts with compact 3" x 5" form factor for tight door frames and retrofit projects.
• Seamless integration via Wiegand/pigtail interface to existing access control systems to minimize deployment time and cost.
• Robust indoor/outdoor design in black finish, delivering durable, professional-grade access control for offices, labs, and secure facilities.