4DI+4DO I/O Module

I/O Module、、、、

Y301-440 I/O Module – 4DI/4DO Modbus-RTU Remote IO

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)

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Overview

The Y301-440 provides Modbus-RTU serial I/O expansion with 4 digital inputs and 4 SPDT relay outputs. Ideal for multi-zone digital automation with compact 115 × 90 × 40 mm footprint.

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 Current180 mA @ 12V
Max Current250 mA (all relays on)
Digital InputsChannels4
TypeDry/wet contact, optically isolated
Voltage Range5~36V (wet mode)
Input Current
Sampling Rate100 Hz
Pulse Counter32-bit, rising/falling selectable
Debounce5-255 ms (default 50 ms)
Digital OutputsChannels4
TypeSPDT relays
Contact RatingAC 277V 10A / DC 28V 10A
Minimum LoadAC 10V 10 mA
Switching Time
Electrical Endurance100k cycles @ rated load
State RetentionNone / soft reboot / full retention
CommunicationInterfaceRS485 (2-wire), RS232, TTL optional
ProtocolModbus-RTU slave
Baud Rate600-230400 bps (default 9600)
Slave Address1-255 (software) + DIP offset 0-31
EnvironmentalOperating Temperature-40°C ~ +85°C
Humidity5~95% RH, non-condensing
ProtectionIP20
EnclosureUL94 V-0 flame-retardant plastic
Dimensions115 × 90 × 40 mm

Documentation & Support