Serial Remote I/O Modules

Serial I/O is the use of a standard RS-232/422 or RS-485 interface to transmit a variety I/O signals including sensor, voltage, digital, relay, TTL and open collector.

We have been supplying remote I/O modules for over 20 years. Our comprehensive range includes Ethernet, USB, serial, wireless and fieldbus I/O modules offering analog, digital and relay acquisition and control.

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In stock [38]
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Ethernet I/O [90]
Serial I/O [71]
Wireless I/O [55]
Fieldbus I/O [7]
Expansion I/O [12]
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Showing 19 of 71 Serial Remote I/O Modules
ADAM-4015
RTD Input Module
RS-485 to 6 Channel RTD Input Module with Modbus
  • Input: RTD
  • Channels: 6
  • Input Type: Pt 100, Pt 1000, Balco 500, ...
  • Resolution: 16-bit
  • Sample Range: 10 S/s (sum)
  • Communication Interface: RS-485
  • Isolation Voltage: 3000V DC
  • Protocol: ASCII command, Modbus/RTU
From £244
ADAM-4017
Analog Input Module
RS-485 to 8 Channel Analog Input Module
£163
IN STOCK
ADAM-4018+
Thermocouple Input Module
RS-485 to 8 Channel Thermocouple Input Module with Modbus
    From £237
    ADAM-4019+
    Universal Analog Input Module
    RS-485 to 8 Channel Universal Analog Input Module with Modbus
    From £280
    ADAM-4024
    Analog Output Module
    RS-485 to 4 Channel Analog Output Module with Modbus
    • Input: Digital
    • Input Channels: 4
    • Input Type: Wet Contact, Logic level 1
    • Output: Analog
    • Output Channels: 4
    • Output Type: V, mA
    • Output Resolution: 12-bit
    • Communication Interface: RS-485
    From £199
    IN STOCK
    ADAM-4050
    Digital IO Module
    RS-485 to 16 Channel Digital I/O Module with 8Digital inputs and 8 Digital outputs
    • Input: Digital
    • Input Channels: 8
    • Input Voltage: Wet Contact Logic level 1...
    • Output: Digital
    • Output Channels: 8
    • Output Voltage Rating: 0V to 30V DC
    • Communication Interface: RS-485
    • Protocol: ASCII command, Modbus/RTU
    From £76
    ADAM-4051
    Isolated Digital Input Module
    RS-485 to 16 Channel Isolated Digital Input Module with Modbus
    From £101
    IN STOCK
    ADAM-4052
    Isolated Digital Input Module
    RS-485 to 8 Channel Isolated Digital Input Module with six fully independent isolated channels and two isolated channels...
    • Input: Digital
    • Channels: 8
    • Input Type: Wet Contact Logic level 1
    • Communication Interface: RS-485
    • Isolation Voltage: 3000V DC
    • Protocol: ASCII command
    • Connectors: 2x 10-pin plug-in screw term...
    • Input Voltage: 10V to 30V DC
    From £75
    ADAM-4053
    Digital Input Module
    RS-485 to 16 Channel Digital Input Module
    • Input: Digital
    • Channels: 16
    • Input Voltage: Dry contact Logic level 0...
    • Communication Interface: RS-485
    • Protocol: ASCII command, Modbus/RTU
    • Connectors: 2x 10-pin plug-in screw term...
    • Operating Temperature: -10°C to +70°C
    • Certification: CE, FCC
    From £90
    ADAM-4055
    Isolated Digital IO Module
    RS-485 to 16 Channel Isolated Digital I/O Module with Modbus
    • Input: Digital
    • Channels: 8
    • Input Voltage Range: Dry Contact Logic l...
    • Output: Digital
    • Output Voltage: 0V to 40V DC
    • Sink Current: 200 mA max./channel
    • Communication Interface: RS-485
    • Isolation Voltage: 2500V DC
    From £101
    IN STOCK
    ADAM-4056SO
    Sourcing Digital Output Module
    RS-485 to 12 Channel Isolated Sourcing Digital Output Module with Modbus
    From £107
    ADAM-4060
    Relay Output Module
    RS-485 to 4 Channel Relay Output Module
    • Output: Relay
    • Channels: 4
    • Contact Rating (Resistive): 2 A @ 30 VDC...
    • Relay Type: 2x Form A, 2x Form C
    • Communication Interface: RS-485
    • Protocol: ASCII command, Modbus/RTU
    • Connectors: 2 x 10-pin plug-in screw ter...
    • Input Voltage: 10V to 30V DC
    From £98
    ADAM-4068
    Relay Output Module
    RS-485 to 8 Channel Relay Output Module with Modbus
    • Output: Relay
    • Channels: 8
    • Contact Rating (Resistive): 1A @ 30V DC,...
    • Relay Type: 4x Form A, 4x Form C
    • Communication Interface: RS-485
    • Protocol: ASCII command, Modbus/RTU
    • Connectors: 2x 13-pin plug-in screw term...
    • Input Voltage: 10V to 30V DC
    From £118
    IN STOCK
    ADAM-4069
    Power Relay Output Module
    RS-485 to 8 Channel Power Relay Output Module with Modbus
    • Output: Relay
    • Channels: 8
    • Contact Rating (Resistive): 5A @ 30V DC,...
    • Communication Interface: RS-485
    • Protocol: ASCII command, Modbus/RTU
    • Connectors: 2x 13-pin plug-in screw term...
    • Input Voltage: 10V to 30V DC
    • Operating Temperature: -10°C to +70°C
    From £152
    IN STOCK
    ADAM-4080
    Counter Frequency Module
    RS-485 to 2 Channel Counter/Frequency Module
    • Input: Counter
    • Input Channels: 2
    • Counting Range: 32-bit
    • Max. Input Frequency: 50Hz
    • Output: Digital
    • Output Channels: 2
    • Voltage Range: 0V to 30V DC
    • Communication Interface: RS-485
    From £131
    IN STOCK
    ADAM-4115
    RTD Input Module
    Robust RS-485 to 6 Channel RTD Input Module
    • Input: RTD
    • Channels: 6
    • Input Type: Pt 100, Pt 1000, Balco 500, ...
    • Resolution: 16-bit
    • Sample Range: 10 or 100 S/s (sum)
    • Communication Interface: RS-485
    • Isolation Voltage: 3000V DC
    • Protocol: ASCII command and Modbus/RTU
    ADAM-4117
    Analog Input Module
    RS-485 to 8 Channel Analog Input Module with Modbus
    • Input: Analog
    • Channels: 8
    • Input Type: V, mV, mA
    • Resolution: 16-bit
    • Sample Range: 100 S/s (sum)
    • Voltage Range: ±15 V, ±10 V, ±5 V, ±1V, ...
    • Communication Interface: RS-485
    • Isolation Voltage: 3000V DC
    From £194
    IN STOCK
    ADAM-4150
    Digital IO Module
    RS-485 to 15 Channel Digital I/O Module with Modbus
    • Input: Digital (Counter)
    • Input Channels: 7
    • Counting Range: 32-bit
    • Max. Input Frequency: 3 kHz
    • Input Voltage Range: Dry contact Logic l...
    • Output: Digital
    • Output Channels: 8
    • Communication Interface: RS-485
    £109
    IN STOCK
    ADAM-4168
    Reed Relay Output Module
    RS-485 to 8 Channel Reed Relay Output Module with Modbus
    • Output: Relay
    • Channels: 8
    • Contact Rating (Resistive): 1A @ 30V DC,...
    • Relay Type: 8x Form A
    • Communication Interface: RS-485
    • Isolation Voltage: 3000V DC
    • Protocol: ASCII command, Modbus/RTU
    • Connectors: 2x 10-pin plug-in screw term...
    From £129
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    +44(0)1782 337 800
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