R413E16 16ch RS485 RS232(TTL) PLC Modbus Rtu Module IO Control Switch Board

8 Digital Input Module RS485 Modbus RTU TTL IO PLC Switch Acquisition Board

1 PCS DC 12V 4-20mA 0-5V 0-10V Voltage Signal Acquisition RS485 Modbus RTU Modul

RS485 to Ethernet TCP/IP Converter MQTT Modbus RTU Module With Rails

2CH RS485 Digital Temperature Collector DS18B20 Sensor Modbus Analog Input IO

Voltage Current RS485 Collector Module ADC 0-5V 0-10V 4-20MA 0-20MA Serial Port

RS485 2AO 2AI 4DI 4DO ESP32 Multifunction Expansion Board Modbus Wifi Relay Modu

8-32 DI-DO PNP to PNP RS485 Modbus Rtu Remote IO Module DC 12-24V 300MA Output