Digital/Discrete Module

Digital/Discrete I/O Module


Discontinued: No new product for sale. More Info

The digital I/O modules provide four inputs and four solid state outputs. The I/O modules offer 2500 V r.m.s. isolation, with a wide operating temperature range and Class I Division 2 hazardous location rating, making them ideal for demanding industrial installations.

Connect them to the wireless I/O radios for point-to-point wire replacement applications, or to the RS485 I/O Extension module to add I/O to a Modbus network.


Used With:

Wireless I/O Radio Kit

Multi-Point Wireless I/O Radio Kit

Modbus RS485 I/O System

Features and Benefits

  • Easy to use: No software configuration needed
  • Easy to install: Mounts onto a 35 mm DIN rail without any tools
  • Digital Inputs: 4
  • Digital Outputs: 4
  • Isolation Voltage: 2500 V r.m.s.
  • Input Voltage Range: 3 to 30 VDC
  • Failsafe Modes: On, Off, or Last Known Value (Default)


Hardware & System



DIN Rail Mounting Compatibility

35 mm x 7.5 mm DIN Rail

I/O Module Slave ID Selection

16-Position Rotary Switch

Built-In Mounting Hardware

Spring-loaded clip-on system

Wire Gauge

Solid / Stranded (AWG) 28-12 gauge

Wire Rating

UL: 300 V RMS, 80 °C and 300 V, 105 °C

CSA: 300 V RMS, 105 °C


2-Year limited

²When using more than a 5-Module Combination per Radio, use the Power Budget Calculator to determine maximum I/O Module capacity.




Number of Inputs


Number of Outputs


Isolation Voltage

2500 V r.m.s.

Input Voltage Range

3 to 30 VDC

Input Voltage Threshold

1 Signal ("H"): > 2.3 VDC

0 Signal ("L"): < 1.1 VDC

Output Rating

1 A Sink Current for

Open-Drain Outputs / NPN

FailSafe Modes

On, Off, or Last Known Value (Default)




Green LEDs

Line-Driven Input Indicators

Red LEDs

Output Indicators

Power Consumption

Typical: 18 mA / Max: 26 mA @12 VDC

Packaging Dimensions (WxHxD)

4.8 x 5.1 x 2.8 in / 123 x 129 x 72 mm

Net Dimensions

0.7 x 3.9 x 4.5 in / 17.5 x 99 x 114 mm

Packaging Weight

Single: 0.5 lbs / 227 g

Double: 0.8 lbs / 363 g

Net Weight (Single)

0.3 lbs / 136 g

Safety & Compliance



Operational Temperature

-40 °C to 85 °C / -40 °F to 185 °F

Storage Temperature

-20 °C to 85 °C / -4 °F to 185 °F


0 to 99 %, Non-condensing

Degree of Protection / Housing Type

IP20 / Plastic

Hazardous Locations Classifications

UL Class I; Division 2 (Zone 2), Pending


Declaration of Conformity (RoHS/CE) 108.25 kB Last Modified 07/24/2018