Feature:1. 8 CHANNELS: 8 channels optical isolation digital input (NPN low level input) and output (ULN2803 NPN output), with a maximum load current of 300MA for each channel.2. STANDARD COMMAND: This RS486 IO module has standard communication protocol commands (function code, written on 05 06 15/16, read on 01 02 03).3. MULTI FUNCTION: The multifunctional RS485 controller can be networked with configuration software, PLC, or industrial touch panel.4. COMMUNICATION CIRCUIT: The input and output control board adopts communication circuit design for lightning protection and anti interference.5. WIDE USAGE: This IO control board can be widely used for signal acquisition and control in the industrial field.Specification:Item Type: RS485 IO ModuleMaterial: ABSWorking Voltage: DC 7-25V (9V 12V 24V)Working Current: 8-50MABaud Rate: 1200 2400 4800 9600 (Default) 19200 38400 57600 115200Parity Bit: None (Default), Even, Odd.Package List:1 x RS485 IO Module