Feature: 1. PLC Controller: 16 channel opto isolated digital input as well as 16 channel opto isolated digital transistor output. 2. Working Safety: Equpped with status indicators, the power supply circuit also uses anti reverse connection for safety. 3. Reliable Works: Adopting RS485 RTU standard communication, can be networked with PLC, etc. for better machine control. 4. Practical Uses: Enables wide application in signal acquisition and control of industrial field equipment, very useful. 5. Simple Storage: You can use dedicated upper computer to easily set the module parameters and save the data permanently. Specification: Item Type: PLC Controller Material: ABS, PCB Number of Input Bits: 16 channels. Digital Input: Optocoupler Isolated Input Input Signal Type: Switch contact signal or level signal. Input Signal Valid Range: DC 20-28V Number of Output Bits: 16 channels Output Type: PNP transistor output. Output Capacity: 0.5A for 1 point or 2A for 4 points. Interface Type: RS485, DB9 male head. Baud Rate: 4800~115200 Communication Format: RTU, 8 bit data, 1 bit stop, no parity (configurable). Address Range: 1~254 Working Voltage: DC24V, with anti reverse polarity protection. Power Consumption: 2W~4W Surge Protection: 600W Working Temperature: -20℃~+70℃ Storage Temperature: -40℃~+85℃. Package List: 1 x PLC Controller Note: Pay attention to the correct operation.