Transmission Security
Each reader has a unique identifier registered during the access point configuration. During this process, individual encryption keys for the site are uploaded, and an RS485 address is assigned. Any attempt to replace the reader without this procedure will immediately trigger an alarm, and the device will reject all cards.
Controller–reader transmission is implemented using the OSDP-SC standard, with AES-128 encryption and a partial key exchange after every session. This protects the system against eavesdropping and replay attacks by unauthorized devices.
Security between reader and card
The EQU-R402 reader supports Mifare DESFire EV3 cards, which are compliant with ISO/IEC 14443A and certified at the EAL5+ level. Data transmitted between the reader and the card is protected by a hardware-based AES-128 cryptographic engine.
Authentication is performed in three stages in accordance with ISO/IEC 7816-4. Additional security features include:
- card proximity control (protection against transmission hijacking),
- verification of NXP chip authenticity,
- transaction MAC at the card application level,
- full transmission compliant with ISO/IEC 14443-4,
- default card lock to prevent use in other systems.
The reader is also backwards compatible and can operate with Mifare Classic, DESFire D40, EV1, and EV2 cards.
Durable construction
The reader housing (75 × 112.5 × 20 mm) is made of a PET-G composite with carbon fiber, ensuring high resistance to mechanical damage, atmospheric conditions, and UV radiation. The electronics are completely encapsulated in epoxy resin, which guarantees an IP65 rating and a hard, multi-layer structure of over 10 mm protecting the components.
The version with a keypad has a uniform front panel with backlit touch buttons. Each press is signaled by light and sound. The reader features a built-in buzzer and a tamper sensor.
Communication and power supply
As standard, the reader is equipped with a 4-core cable (power + RS485/OSDP).
A version with a Wiegand interface is also available – with a 10-core cable.
- Power supply: 10–30 VDC
- OSDP v2.2, RS485 (up to 1200 m with a dedicated cable)
- Max. branch length: 5 m
- Termination: 100 Ω