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This 32-channel Relay Module has an RS485 bus system and uses the Modbus RTU protocol for fast and secure communications. It is equipped with a power supply isolation, magnetical isolation, resettable fuse, and TVS diode, providing safety and durability.
It has a configurable device address range from 1 to 255, allowing multiple devices to be cascaded on a single RS485 bus for streamlined integration. The flash-on and flash-off function provides temporal relay activation, giving automatic control with precision.
Supporting a wide input voltage range from 7 to 36V, the module includes a voltage regulator chip for consistent performance without the need for an additional power supply for the isolation terminal. Its unibody design combines power supply and magnetical isolation, fostering signal integrity, minimal interference, and low power consumption.
Note: The power supply adapter is NOT included. You can get one here
Operating Voltage | 7~36V |
Communication Interface | RS485 |
Baudrate | 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 |
Default Communication Format | 9600, N, 8, 1 |
Relay Channels | 32 |
Contact Form | 1NO 1NC |
Contact Rating | ≤10A 250VAC/30VDC |
Communication Protocol | Standard Modbus RTU protocol |
RS485 Address | 1~255 |
LED Indicators | STA: MCU indicator, keep flashing when the MCU normally working |
TXD: TX indicator, lights up when sending data | |
RXD: RX indicator, lights up when receiving data |