Digital I/O Module

12DO Modbus RS-485 Remote I/O Module 
12DO (Source type) Modbus RS-485 Remote I/O Module
4 Relay RS-485 Remote I/O Module. Modbus RTU,ASCII
8 Relay Modbus RS-485 Remote I/O Module
8 Power Relay Modbus RS-485 Remote I/O Module
2 Counter/ 2DO Modbus RS-485 Remote I/O Module