CDVI K4 KRYPTO Bluetooth Mullion Reader and Keypad

Secure, flexible access control for commercial and critical infrastructure environments. The CDVI K4 KRYPTO Bluetooth Mullion Reader and Keypad delivers enterprise-grade security and streamlined authentication in a compact mullion form factor. Built for integration with modern security and surveillance systems, the K4 supports Bluetooth mobile credentials, NFC and 13.56 MHz MIFARE (DESFire EV1/EV2) as well as the KRYPTO Mobile‑PASS, giving administrators multiple credential options to improve user experience and reduce badge fraud.

With secure RS‑485 communication and OSDP‑2 compatibility, the K4 ensures encrypted, tamper-resistant data exchange to your door controller or centralized access management platform. The reader operates on 12 VDC and offers up to a 2" (5 cm) read range, making it an ideal choice for mullion mounting on doors and gates where reliable, short-range authentication is required. Whether you’re protecting office buildings, data centers, or mixed-use properties, the CDVI K4 streamlines monitoring and access workflows while maintaining high security standards. Contact our sales team to specify the K4 for your next project or add it to your access control deployment today.

• Enterprise-grade end-to-end encryption reduces unauthorized access and fraud, protecting sensitive facilities and staff.
• Supports Bluetooth, NFC and MIFARE DESFire/Mobile‑PASS credentials for flexible, contactless authentication that speeds entry.
• OSDP‑2 and secure RS‑485 connectivity enable centralized monitoring and easy integration with modern access control systems.
• Compact mullion design and 12 VDC power simplify retrofit installations on doors, gates and doorframes in commercial environments.
• Durable construction and a 2" (5 cm) read range provide reliable performance for high-traffic entrances and surveillance entry points.