Level Shifter

Optoisolator Board

Function of optoisolator: An opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light.


  • DIN rail mountable
  • Four/Five/Six/Eight optoisolators on single board
  • LED indication for input signal
  • Positive supply common/negative supply common selection by jumpers
  • 2/3/4 Outputs can be grouped to same supply by jumpers

Technical Specifications

  • Input signal voltage:20 VDC-28VDC, Typical voltage is 24VDC
  • Max. input current:25 mA @24VDC
  • Max. output voltage:65 VDC
  • Min.output voltage:2.0 VDC
  • Max. load per output point:50 mA
  • Continuous power dissipation at (or below) 25°C free-air temperature: 200mW
  • Input to output electrical isolation: 3.55 KV
  • Max. Voltage drop in output voltage: 0.5 V @ 5mA load
  • Resistance, input to output: 100 GΩ
  • Switch ON delay: 5µS
  • Switch OFF delay: 5µS


  • For connecting inverters/Servo drives to PLC output modules.
  • To convert NPN sensor to PNP sensor and vice versa.
  • For isolating field inputs from PLC input module.
  • To connect incremental encoder (With Incompatible signal level) to control system.
  • In all applications where we need very fast and require isolation between driver and driven circuits.
  • For connecting one signal level (5-230 VDC)to another signal level (2-65 VDC)with isolation. 
  • To make field inputs noise free.
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Characteristic of optoisolator Circuit

Optoisolator Vs Relay Comparison



Relay Board


Switching time 5µS

Switch ON time 10mS & Switch OFF time 5ms


No limitation on number of operations at 50mA load

300,000 operations is limit at 2A/24 VDC load


Space 65x87(mm) for 5 points

Space 100x87(mm) for 4 points


Max. load 50mA per point

Max. load 2A per point


Available in 4points/5 points/6 points/8 points variants.

Opto. boards with input signal other than 24VDC can be supplied on demand.

High speed switching 2µS possible on demand.


CE Certified




Profile & end plates:CE

NOTE:- Due to continuous product development the product supplied to you may look different than the product image in the pdf file.

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