IECS-1116-DI Industrial EtherCAT Slave I/O Module with Isolated 16-ch Digital Input - Planet Technology USA
Amazon.com: TP-Link Gigabit SFP to RJ45 Fiber Media Converter, Fiber to Ethernet Converter 10/100/1000Mbps RJ45 Port to 1000Base-SX Multi-Mode Fiber (MC200CM) Black : Everything Else
ITCP-4055 modbus TCP Ethernet IO module Digital input and output conversion RJ45 capture card DI/DO network - AliExpress
Ethernet I/O 16 Digital Input - LEOS METER
ETHERNET TO Digital IO 8 Inputs + 8 Outputs - Betterbox
RS232 RS485 Ethernet Converter, Serial Ethernet to Modbus Converter
I/O Controller 2 | HW-group.com
Ethernet Digital IO Module 8 Digital Inputs / 8 PNP Outputs - DAT8188
Digital Input/Output (Dry Contact Closure over Fiber/IP)
D7730 Modbus TCP/IP Ethernet Digital Input/Output Module - Jewell Instruments.
ADC8-ENET Ethernet Analog to Digital Converter (8 channel in 8, 10 and 12 bit)