CDVI K4 (KRYPTO) is a slim mullion reader with an integrated touch keypad designed for high‑security access control. It reads 13.56 MHz MIFARE credentials (Classic and DESFire EV1/EV2), supports Bluetooth smartphone credentials via CDVI Mobile‑PASS, and provides end‑to‑end AES128 (KRYPTO) encryption when paired with a compatible KRYPTO controller.

• Reads MIFARE Classic and DESFire EV1 / EV2 (13.56 MHz)
• Integrated touch‑sensitive keypad (4–8 digit PIN)
• Bluetooth‑ready (Mobile‑PASS / ATRIUM BT) and NFC capable
• KRYPT O AES128 end‑to‑end encryption; OSDP‑2 compatible with supported controllers
• Mullion (surface) form factor for door‑frame/architrave mounting; visual and audible feedback
• Robust environmental protection (IP65) and vandal resistance (IK10)

Use cases: commercial access control installations requiring a narrow/mullion reader with keypad and high‑security credential support (e.g. office entrances, secure internal doors, perimeter access). Ideal for installers integrating with CDVI ATRIUM/KRYPTO controllers.

Installation & compliance: Surface mount (mullion/architrave). Check the supplied datasheet and installation guide for wiring, controller compatibility and local compliance (CE/UKCA) before installation. Only trained personnel should perform electrical connections and configuration.