4DI+4DO I/O Module

I/O Module, , , ,
Y301-440 4DI 4DO IoT I/O module with Modbus RTU

Y301-440 4DI+4DO Modbus I/O Module

Model: Y301-440

Key Features

  • Four DI + four DO with SPDT relays AC 277 V/10 A or DC 28 V/10 A

  • DI offers wet/dry sensing, pulse counter, and configurable debounce

  • Supports eight linkage rules (follow, timer, pulse, interlock, schedule)

Overview

Digital Modbus RTU I/O node with four opto-isolated inputs and four SPDT relay outputs for multi-zone control in a compact 115 x 90 x 40 mm enclosure.

Key Features

  • Four DI + four DO with SPDT relays AC 277 V/10 A or DC 28 V/10 A

  • DI offers wet/dry sensing, pulse counter, and configurable debounce

  • Supports eight linkage rules (follow, timer, pulse, interlock, schedule)

  • 9–36 VDC input, DO retention, DIP + software Modbus addressing with watchdog

Specifications

Power SupplyVoltageDC 5~36V
Typical Current200 mA @ 12V (all DO off)
Max Current280 mA @ 12V (four relays on + AI sampling)
Operating Temperature-40°C ~ +85°C
Humidity5% ~ 95% RH, non-condensing
Digital InputsChannels4
TypeDry/wet contact, opto-isolated
Voltage Range5~36V (wet contact mode)
Input Current
Sampling Rate100 Hz
Pulse Counter32-bit, selectable rising/falling edge
Debounce5~255 ms (default 50 ms)
Digital OutputsChannels4
TypeSPDT relay
Contact Rating277 VAC 10 A / 28 VDC 10 A
Minimum Load10 VAC 10 mA
Switching Time
Electrical Life100k cycles at rated load
Output RetentionNone / soft reboot / full retention
CommunicationInterfacesRS485 (2-wire), optional RS232 or TTL
ProtocolModbus RTU slave
Baud Rate600~230400 bps (default 9600)
Slave Address1~255 (software) + DIP offset 0~31
MechanicalDimensions115 x 90 x 40 mm
Mounting35 mm DIN clip or screw slots
ProtectionIP20

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