DC 7-24V Power Supply Four Channel Relay Module 8Bit MCU MAX3232 RS232/TTL UART Support Modbus RTU 4 Way Input 4 Way Output
USD 5.91USD 6.57
DC 7-24V Power Supply Four Channel Relay Module 8Bit MCU MAX3232 RS232/TTL UART Support Modbus RTU 4 Way Input 4 Way Output