Introduction to the CDVI K2 Mullion Reader and its key features
TheCDVI K2 mullion reader(ITM002617) is a compact, high‑security access control reader designed for narrow mullion mounting and demanding environments. Factory‑programmed to support 13.56 MHz credentials, it reads MIFARE Classic as well as DESFire EV1 and EV2 cards, and it is purpose‑built to deliver an encrypted end‑to‑end solution when paired with compatible CDVI controllers. The unit combines hardware security (CDVI KRYPTO diversified key authentication and AES128‑level encryption as stated by CDVI), modern mobile credential support (built‑in Bluetooth and NFC), and robust physical protection (IP65 / IK10), making it a versatile option for commercial buildings, retrofit projects and high‑security doorways.
Key features at a glance
- High security:MIFARE Classic and DESFire EV1 & EV2 support with CDVI KRYPTO diversified key authentication.
- Mobile credentials:Integrated Bluetooth and NFC for KRYPTO Mobile‑PASS / ATRIUM BT smartphone credential use.
- Secure communications:RS‑485 interface with OSDP compatibility for encrypted controller links.
- Rugged construction:IP65 ingress protection and IK10 impact rating for outdoor and harsh environments.
- Compact form factor:Slim mullion surface mount (127 × 47 × 21.5 mm) for narrow profiles.
- Power:12 V DC supply with typical current draw around 200 mA.
Detailed specifications and the benefits they deliver
The CDVI K2’s principal strength is its support for modern 13.56 MHz credential technologies. Compatibility withDESFire EV2brings enhanced key management, improved anti‑cloning properties and secure file systems compared with legacy technologies, while support for MIFARE Classic maintains backward compatibility where needed. CDVI’s KRYPTO diversified key system and the stated AES128‑level encryption protect card‑to‑reader communications and, when paired with CDVI ATRIUM/A22K controllers, enable end‑to‑end encrypted authentication. For sites that need to mitigate cloning, replay attacks or key compromise, this layered approach provides clear security advantages.
Built‑in Bluetooth and NFC make the K2 suitable for modern, smartphone‑centric access strategies. KRYPTO Mobile‑PASS and ATRIUM BT enable users to present a credential from their phone via either BLE or NFC for touchless or near‑touch access. Mobile credentials simplify credential lifecycle management (issuance, revocation, and updates), reduce physical card handling and increase user convenience—particularly in facilities moving toward contactless, app‑driven access control.
The reader communicates over RS‑485 and is OSDP compatible, making it straightforward to integrate with CDVI ATRIUM and A22K controllers. OSDP (Open Supervised Device Protocol) provides a secure, standardised channel for reader‑controller communications, supporting encrypted data transfer and device supervision. For integrators, this compatibility supports modern deployments and future‑proofing by adopting an open protocol rather than proprietary wiring where available.
Mechanically the K2 is built for real‑world conditions. TheIP65ingress rating protects against dust and water jets, and theIK10impact rating gives assurance against vandalism and impact. Operating temperature from −40 °C to +70 °C and a polycarbonate housing in a slim black mullion form allow installation outdoors or in exposed entryways without compromising aesthetics or performance. The slim dimensions (127 × 47 × 21.5 mm) make it ideal for narrow door mullions where space is limited.
The K2 requires a 12 V DC supply and typically draws around 200 mA during operation. Read range is up to approximately 10 cm depending on credential and environmental conditions. Documentation such as the CDVI K2 datasheet and quick start guide provide wiring diagrams and configuration steps; professional installation is recommended to ensure proper wiring, grounding and controller integration. The supplied materials do not list specific CE/UKCA certification details or warranty information—buyers should confirm certification and warranty terms with the supplier before purchase.
Use cases and scenarios where the CDVI K2 excels
The K2’s combination of compact size, security and mobile credential support makes it particularly well suited to several common scenarios:
- Mullion mounting on narrow frames:Its slim profile was specifically designed for narrow door frames and mullions where larger readers won’t fit.
- High‑security access points:Facilities requiring strong anti‑cloning measures—financial institutions, data centres, R&D labs—benefit from DESFire EV2 plus KRYPTO diversified key mechanisms.
- Retrofit and upgrade projects:Where an existing wired infrastructure can be retained but credential technology needs updating, the K2 provides a straightforward path to modern DESFire and mobile credential support while integrating with existing CDVI controllers.
- Outdoor or exposed entryways:The IP65 / IK10 ratings allow deployment at exterior doors, gates and loading bays where exposure to weather and potential impact is a concern.
- Mobile‑first installations:Organisations looking to migrate to smartphone credentials—reducing card issuance and improving user experience—will find the K2’s BLE/NFC capabilities useful.
Comparisons with similar products on the market
When evaluating the CDVI K2 against other readers in the same category, consider three main differentiators: credential and encryption capabilities, mobile support, and mechanical/environmental ratings.
Many modern readers support DESFire EV2, but CDVI emphasizes KRYPTO diversified key authentication and AES128‑level encryption when used with CDVI controllers for end‑to‑end protection. This integrated ecosystem approach can be an advantage for customers standardising on CDVI hardware and controllers. If you are mixing vendor hardware, ensure equivalent key management and encryption are supported across devices.
Built‑in Bluetooth plus NFC is increasingly common, but not universal. Some readers offer one or the other; the K2’s dual support provides flexibility—BLE for hands‑free or long‑range mobile actions and NFC for tap‑to‑authenticate scenarios. Compare the user experience, provisioning workflows and mobile credential backend when evaluating alternatives.
The mullion form factor and IP65/IK10 ratings put the K2 in the rugged, slim reader class. Some competitors provide similar environmental performance but in larger housings; others meet IP ratings but lack IK10 impact resistance. If the installation environment includes exposure to vandalism or severe weather, the K2’s combination of protections is a clear advantage.
OSDP compatibility is a modern requirement for secure installations. While many contemporary readers support OSDP, legacy readers may not. If the installation will use CDVI ATRIUM/A22K controllers, the K2 is designed for straightforward integration—reducing complexity compared with attempting to adapt non‑OSDP hardware.
Customer testimonials and installer feedback
No verified customer reviews were provided in the supplied materials. However, based on typical installer and systems integrator feedback for readers with similar feature sets, the following are common observations you can expect to hear from site teams and installers:
- "Straightforward integration with CDVI ATRIUM controllers saved configuration time compared with mixing vendors."
- "The slim mullion form made installation on narrow frames clean and unobtrusive—much better fit than standard readers."
- "Mobile credential support reduced the need to issue physical cards, and users appreciated the convenience of BLE/NFC."
- "Robust build and good ingress/impact ratings gave confidence for exterior installations."
Prospective buyers should request reference installations and, where possible, speak with integrators who have deployed the product in similar environments to confirm real‑world performance and configuration considerations.
Pricing, warranty and purchasing considerations
The supplied pricing information lists a cost price of 151.62 (currency as supplied) and a suggested retail price of 229.00. While these figures provide a baseline for budget planning, buyers should verify final pricing with their supplier—especially for volume discounts, shipping and local taxes. Warranty details were not included in the materials; confirm warranty terms, return policies and certification (CE/UKCA or local approvals) with the supplier before purchasing.
Conclusion: why the CDVI K2 is a strong choice
The CDVI K2 mullion reader balances security, flexibility and ruggedness in a compact form factor. Its support for DESFire EV2 and CDVI KRYPTO diversified key authentication addresses modern security needs, while built‑in Bluetooth and NFC enable mobile credential strategies that improve user convenience and reduce card lifecycle costs. RS‑485 with OSDP compatibility and planned integration with CDVI ATRIUM/A22K controllers simplify secure installations, and IP65/IK10 protection ensures the reader can withstand outdoor and demanding environments.
For organisations and integrators seeking a slim, secure mullion reader that supports both traditional smartcards and modern mobile credentials, the CDVI K2 is a practical choice—especially where standardising on CDVI controllers and KRYPTO end‑to‑end encryption is desirable. As always, confirm certification, warranty terms and compatibility with your chosen controller platform before purchase, and engage a qualified installer to ensure correct wiring and secure configuration.
