8Ch Input/Output Digital TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu1629

8DI/2DO Isolated IO Module with Isolated RS-485 and LED Indicators DMB-820

8DI/8DO Isolated IO Module with isolated RS-485 and 2-Ch 30KHz PULSE Counter

10DO Isolated IO Module with Isolated RS-485 and LED Indicators

Ultra-thin Safety Barrier RS485 IO Module 8DI-8DO RS485 Digital NPN Input Output

16-Channel Digital Input Isolated Module with RS-485 and Nixietube 3-Ch 30KHz

16DO Isolated IO Module with Isolated RS-485 and LED Indicators QMB-10B

6DI/6DO Isolated IO Module with Isolated RS-485 and LED Indicators DMB-660