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

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 Rtu7526

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 Rtu1456

8Ch Input/Output Digital Switch TTL LvTTL CMOS RS485 IO Control Module7254