2DI + 2DO module with SPDT relays rated 277 VAC 10 A or 28 VDC 10 A
Y301-220 2DI+2DO Modbus I/O Module
2DI+2DO I/O Module
Compact Modbus RTU expansion module with two opto-isolated digital inputs and two 10 A relay outputs for HVAC, lighting and pump-control retrofits over RS485 or RS232.
Key Features
Dry or wet contact input support with pulse counting and configurable debounce
Built-in automation engine with up to 4 local rules total, 2 per DO channel
5 to 36 VDC input with RS485 Modbus RTU by default and optional RS232 or TTL variants
Specifications
Power Supply
- Voltage
- DC 5~36V
- Typical Current
- 150 mA @ 12V
- Max Current
- 200 mA @ 12V
- Operating Temperature
- -40°C ~ +85°C
Digital Inputs
- Channels
- 2
- Type
- Dry/wet contact, optically isolated
- Voltage Range
- 5~36V (wet mode)
- Sampling Rate
- 100 Hz
- Pulse Counter
- 32-bit, rising/falling selectable
- Debounce
- 5–255 ms (50 ms default)
Digital Outputs
- Channels
- 2
- Type
- SPDT relays
- Contact Rating
- AC 277V 10A / DC 28V 10A
- Switching Time
- <10 ms pickup / <5 ms release
- Minimum Load
- AC 10V 10 mA
- State Retention
- None / soft reboot / power-cycle configurable
Communication
- Interfaces
- RS485 (default), RS232 optional
- Protocol
- Modbus-RTU slave
- Baud Rate
- 600–230400 bps (default 9600)
- Slave Address
- 1–255 software + DIP offset 0–31
Mechanical
- Dimensions
- 82 × 54 × 32 mm
- Mounting
- 35 mm DIN rail or M3 screw
- Protection
- IP20, UL94 V-0 enclosure
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