PD Locker Board

Steuerung für Lockers und Relais

Pries Anfragen

Reliable RS-485 / I2C / UART Controlled Hardware module for Multi-Lock Systems

PD.Relay_Board is a robust embedded STM32 MCU based module designed for managing up to 12 electromechanical locks / solenoids / heavy loads, monitoring power and environmental conditions, and integrating seamlessly into industrial and commercial systems via RS-485 / I2C / UART communication buses.

It is ideal for applications such as access control systems, lockers, vending machines, smart cabinets, kiosks, and industrial enclosures.

Key Features 

  • Controls up to 12 locks per module with individual status monitoring

  • RS-485 / I2C / UART multi-drop communication with device addressing (up to 5-bit address), 372 locks max 

  • Reliable RS-485 / I2C / UART simple API commands with optional CRC32 protection

  • Real-time voltage, current, and temperature monitoring

  • Flexible lock control modes (state-based or pulse-based)

  • Compact, deterministic protocol optimized for embedded systems

  • Low-power consumption, optimized for off-grid solar-powered applications and EMC-noisy environments
  • Remote Firmware update for onboard STM32 MCU via RS-485 and I2C buses

Easy Integration & System Control

The API includes essential system-level commands:

  • API version reporting

  • Remote MCU monitoring and reset

  • Configurable response timing

  • Communication testing utilities

  • Multiboard Daisy-chain connection both data and power

Multi-byte parameters use little-endian format, ensuring compatibility with common microcontrollers and industrial PCs.

Remote Firmware Update (Future-Proof by Design)

  • Remote firmware update feature – capability without physical access

  • Eliminates costly on-site service visits – saves time and money

  • Enables feature upgrades, bug fixes, and security improvements post-deployment

  • Essential for large-scale installations (access controllers, lockers, kiosks, cabinets)

“Once installed, the system keeps improving—no recalls, no manual reprogramming.”

Unlike typical lock controllers, our module combines industrial RS-485 and I²C support, verified lock operation, full system monitoring, and remote firmware updates, making it scalable, serviceable, and future-proof.

Preis anfragen