February 19, 2021

ICP Australia is proud to introduce ICP DAS’s ALM-04-MRTU module which features RS-485 connection and supports Modbus RTU protocol. The controller makes for an easy way to incorporate RS-485 connectivity into the monitoring and control system, which enables effective integration to monitor in SCADA software and HMI.

ALM-04-MRTU includes 4 channels Isolated DI, with 8 alarm modes, 1 channel Relay output & 1 Audio Line out. MP3 audio format (44.1kHz/128kbit/s is preferred), all files & config are stored in Micro SD (T-Flash).

Further, ALM-04-MRTU makes for perfect installation as it supports panel mounting, wall mounting, and DIN-Rail. Also, the ALM-04-MRTU functions seamlessly in tough conditions, since it has an operating temperating of -20 ~ +75°C, with humidity levels of 10~ 95% RH (non-condensing).

Subsequently, the ALM-04-MRTU is the ideal solution for many applications, including, but not limited to, building automation. security automation, machine automation, factory automation, testing equipment, and fire alarm systems.


  • RS-485 Interface
  • Modbus RTU Protocol
  • 4 x DI, 1 x Relay Output
  • MP3 Audio, External Line Out
  • Support Up to 64 Audio Files
  • 8 Alarm Modes
  • 4 Single Channel or 15 Binary Channel Support

See more: ALM-04-MRTU

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