M5Stack Isolated RS485 Unit

M5StackSKU: RB-Mst-89
Manufacturer #: U094

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  • M5Stack Isolated RS485 Unit
  • Features an isolated half-duplex transceiver
  • Built-in CA-IS3082W isolation chip
  • Signal transmission rate: up to 500 Kbps
  • Features two LEGO compatible holes
  • Supports up to 256 bus nodes
  • Development platform: Arduino, UIflow (Blockly, Python)

The M5Stack Isolated RS485 Unit is an isolated half-duplex transceiver based on the RS485 bus protocol. It can convert the TTL level to the RS485 level.

Communication with RS485 devices requiring long-distance signal transmission is possible. The product has a failure protection function whereby in the receiving state if the input is open or short-circuited, the receiver output level is high.

  • 1 x Isolated RS485 Unit
  • 1 x VH-3.96 4P
  • 1 x 120Ω resistance
  • 1 x Grove Cable (20 cm)


  • 56 x 24 x 11 mm
  • Withstand voltage value: 1000 V
  • Maximum number of nodes: 256
  • ESD: ±15KV
  • Protection function: Failure protection, over-current protection, and thermal shutdown protection
  • Development platform: Arduino, UIflow (Blockly, Python)
  • Weight: 13 g

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