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Advantech
BB-485USB9F-4W
Serial Converter, USB 2.0 to RS-485 4-Wire DB9 Female Serial Connector, USB Cable Included
$106.00$106.00 -
$90.33$90.33 -
Available Now! 
Available Now!Pepperl+Fuchs
70104877
EtherNet/IP IO-Link Master with 8 Inputs/Outputs, IO-Link Master (EIP/MOD), Sensor IO-Link Communication Blocks
$859.32$859.32 -
$224.50$224.50 -
Advantech
BB-232OPDR
Serial Repeater, RS-232, TB, Isolated, DIN Rail Mount, IP30, Power Suppply Not Included
$237.30$237.30 -
Advantech
BB-9PFLST
Serial Converter, RS-232 MODEM DB9 F to MM Fiber ST, Allows any Two Pieces of RS-232 Asynchronous Serial Equipment to Communicate Full-Duplex over Two Multi-Mode Fibers
$204.00$204.00 -
Available Now! 
$387.45$387.45 -
Advantech
EKI-2705E-1GPI-AU
5FE Unmanaged Ind. PoE Switch W/T, 4FE+1GE Unmanaged Ind. PoE Switch W/T (Wide Temperature), 216 x 165 x 68mm LWH
$195.00$195.00 -
$177.45$177.45 -
Available Now! 
Available Now!Advantech
ADAM-6060-D1
6-Channel Relay/6-Channel DI IoT Modbus/SNMP/MQTT Ethernet Remote I/O, GCL, Built-in Web Server, Watchdog Timer
$265.00$265.00 -
Weintek USA
IR-ETN40R
Remote I/O Module, Built-in ETN Coupler, Support for Modbus TCP/IP Server and Ethernet/IP Adapter Protocols, 24 Digital Input Channels (4 High Speed), 16 Relay Output Channels, with Stop Output and Pulse Capture (Exclusive Features), Expand
$355.95$355.95 -
Available Now! 
Available Now!Novus
8811400101
DigiRail-4C RS485 Four Counters/Digital InTransmitter, Signal Conditioning/Digital
$133.00$133.00
These devices connect machines, monitor devices and optimize operations.
An Ethernet switch directs data traffic between the devices connected to it. A gateway allows communication and data exchanges between different networks or protocols.
Modbus is a serial communications protocl that simplifies communication between devices.