Features 1、Input and Output Channels: The module has 8 channels of optoisolated digital input channels with NPN low level input, 8 channels of triode digital output channels with ULN2803 NPN output, and the maximum load current of each channel is 300MA. 2、Anti Thunder and Interference: The module can be networked with and configuration software, PLC or industrial touch panel, and the communication circuit is designed with thunder and anti interference capability. 3、Communication Protocol: Our optically isolated digital input and output modules use RS485 RTU standard communication protocol. 4、Mounting Method: Our digital input output module adopts standard DIN rail mounting, which is light weight and easy to install. 5、Wide Application: This module is used for signal acquisition and control in industrial field, smart home, home automation, security monitoring or identification system, etc. Specification Item Type: Optocoupler Isolation Input Output Control Board Material: ABS Operating Current: 8-50MA Features: RS485 communication isolation protection 3000VDC, DI digital input port isolation protection 3000VDC, standard RTU commands (function coding, 05 06 15 16 write, 01 02 03 read) Baud Rate: 1200 2400 4800 9600 (default) 19200 38400 57600 115200 Parity Bit: None (default) or Even or Odd Installation: Standard DIN rail mounting Size: Approx. 125 x 70 x 30mm / 4.92 x 2.76 x 1.18in Package List 1 x Optocoupler Isolation Digital Input Module