Modbus Gateway

4-channel Digital Optical Isolated Input, 4-channel Relay Output I/O Controller, 4DI / 4DO: (0-24V) *4 / Relay *4, Operating Power: 9-30VDC/350mA, Isolated Voltage: 2500V rms, Isolated Voltage Input: 0 ~ 24V, Operating Temperature: -40? to +85?, Work...