Modbus Rtu 1/2/4/8 Channel 7-24V Relay Module Switch input output RS485/TTL UART

2X(8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus4987

2X(8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus1352

8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu1510

8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu3710

8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu1573

8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu7107

8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu7526