Serial Remote I/O Modules for RS-232, RS-422, and RS-485 Networks

Serial Remote I/O modules provide reliable signal acquisition and control via RS-232, RS-422, or RS-485 interfaces. These modules offer dependable connectivity for legacy and modern industrial systems alike, especially useful if you're handling sensor inputs, relay outputs, voltage readings or TTL signals.

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Showing 60 of 73 Serial Remote I/O Modules items

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Advantech ADAM-4017

RS-485 to 8 Channel Analog Input Module

Sealevel 420M-OEM

RS-485 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output OEM Board

Sealevel 420M

RS-485 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output Adapter

Sealevel 410S-OEM

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output OEM Board

Sealevel 410S

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output Adapter

Sealevel 410M-OEM

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output OEM Board

Sealevel 410M

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Reed Relay Output Adapter

Sealevel 430S

RS-232 Modbus RTU to 32 Isolated Digital Input Adapter

Sealevel 430M-OEM

RS-232 Modbus RTU to 32 Isolated Digital Input OEM Board

Sealevel 430M

RS-232 Modbus RTU to 32 Isolated Digital Input Adapter

Sealevel 430S-OEM

RS-232 Modbus RTU to 32 Isolated Digital Input OEM Board

Sealevel 420S-OEM

RS-232 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output OEM Board

Sealevel 420S

RS-232 Modbus RTU to 16 Isolated Digital Input/8 Form C Relay Output Adapter

Sealevel 440M-OEM

RS-485 Modbus RTU to 32 Reed Relay Output OEM Board

Sealevel 440M

RS-485 Modbus RTU to 32 Reed Relay Output Adapter

Sealevel 440S-OEM

RS-232 Modbus RTU to 32 Reed Relay Output OEM Board

Sealevel 440S

RS-232 Modbus RTU to 32 Reed Relay Output Adapter

Sealevel 450S-OEM

RS-232 Modbus RTU to 16 Form C Relay Output OEM Board

Sealevel 450S

RS-232 Modbus RTU to 16 Form C Relay Output Adapter

Sealevel 462M

RS-485 Modbus RTU to 96 Channel TTL DB78F Digital I/O Adapter

Sealevel 462M-OEM

RS-485 Modbus RTU to 96 Channel TTL DB78F Digital I/O OEM Board

Sealevel 462S-OEM

RS-232 Modbus RTU to 96 Channel TTL DB78F Digital I/O OEM Board

Sealevel 463M-OEM

RS-485 Modbus RTU to 96 Channel TTL Digital I/O OEM Board

Sealevel 462S

RS-232 Modbus RTU to 96 Channel TTL DB78F Digital I/O Adapter

Sealevel 450M-OEM

RS-485 Modbus RTU to 16 Form C Relay Output OEM Board

Sealevel 450M

RS-485 Modbus RTU to 16 Form C Relay Output Adapter

Sealevel 470S-OEM

RS-232 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output OEM Board

Sealevel 470S

RS-232 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output Adapter

Sealevel 463M

RS-485 Modbus RTU to 96 Channel TTL Digital I/O Adapter

Sealevel 463S-OEM

RS-232 Modbus RTU to 96 Channel TTL Digital I/O OEM Board

Sealevel 530M

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output Adapter

Sealevel 530S-OEM

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output OEM Board

Sealevel 463S

RS-232 Modbus RTU to 96 Channel TTL Digital I/O Adapter

Sealevel 520S-OEM

RS-232 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output OEM Board

Sealevel 520S

RS-232 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter

Sealevel 470M-OEM

RS-485 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output OEM Board

Sealevel 470M

RS-485 Modbus RTU to 16 Analog Input/2 Analog Output – 8 Isolated Digital Input/8 Digital Output Adapter

Sealevel 520M-OEM

RS-485 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output OEM Board

Sealevel 520M

RS-485 Modbus RTU to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter

Sealevel 530M-OEM

RS-485 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output OEM Board

Sealevel 540M-OEM

RS-485 Modbus RTU to 32 Open-Collector Output OEM Board

Sealevel 540S

RS-232 Modbus RTU to 32 Open-Collector Output Adapter

Sealevel 570M

RS-485 Modbus RTU to 8 Analog Input – 8 Isolated Digital Input/8 Form C Relay Output Adapter

Sealevel 570S

RS-232 Modbus RTU to 8 x 16-bit Analog Input – 8 Isolated Digital Input/8 Form C Relay Output Adapter

Sealevel 540M

RS-485 Modbus RTU to 32 Open-Collector Output Adapter

Sealevel 540S-OEM

RS-232 Modbus RTU to 32 Open-Collector Output OEM Board

Sealevel 530S

RS-232 Modbus RTU to 16 Isolated Digital Input/16 Open-Collector Output Adapter

Moxa ioLogik R1241

RS-485 to 4 Analog Output Module – Modbus RTU – Wide Temperature Operation

Moxa ioLogik R1212

RS-485 to 8 Digital Input / 8 Digital I/O Module – Modbus RTU – Wide Temperature Operation

Moxa ioLogik R1210

RS-485 to 16 Digital Input Module – Modbus RTU – Wide Temperature Operation

Advantech ADAM-4053

RS-485 to 16 Channel Digital Input Module

Moxa ioLogik R1214

RS-485 to 6 Digital Input / 6 Relay Output Module – Modbus RTU – Wide Temperature Operation

Moxa ioLogik R1240

RS-485 to 8 Analog Input Module – Modbus RTU – Wide Temperature Operation

Advantech ADAM-4015

RS-485 to 6 Channel RTD Input Module – Modbus

Advantech ADAM-4055

RS-485 to 16 Channel Isolated Digital I/O Module – Modbus

Advantech ADAM-4080

RS-485 to 2 Channel Counter/Frequency Module

Advantech ADAM-4060

RS-485 to 4 Channel Relay Output Module

Advantech ADAM-4118

RS-485 to 8-Channelannel Thermocouple Input Module – Modbus

Advantech ADAM-4017+

RS-485 to 8 Channel Analog Input Module

Advantech ADAM-4168

RS-485 to 8 Channel Reed Relay Output Module – Modbus

Showing 60 of 73

Serial Remote I/O Modules for RS-232, RS-422, and RS-485 Networks

LCDs with real-time power switching for HV substation installation