Multi Output Extension Module

OM-120 is a multiple output extension module which controls up to 12 output relays. It can be used as elevator controller with BioStar 2 system. Max. 31 units can be connected to a master device via RS485 daisy chain. OM-120 can also support anti-passback zone and fire alarm zone features.


  • 12 output relays per unit
  • Controls max. 192 floors per elevator
  • Preset alert for alarms in APB zones
  • Elevator groups can be added to a certain fire alarm zone
  • Terminating resistance for RS-485 connections


Please refer to the application notes for various configurations.

Elevator Control up to 192 Floors

OM-120 can be configured to control doors with BioStar 2 system. Up to 192 floors can be controlled per elevator and BioStar 2 system can control max. 1,000 elevators.


Versatile Interfaces

Along with elevator control, OM-120 produces various output signals including preset relay signals to entrances and different zones. For fire alarm zone, input/output can easily be configured using aux and relay ports.


General CPU Cortex M3 72MHz  
  Memory Flash 128KB, SRAM 20KB  
  LED Multi-color
- Power 1 ea
- Relays 12 ea
- RS-485 2 ea
- AUX IN 1 ea
- Status 1 ea
  Operating temperature -20°C ~ 60°C  
  Storage temperature -40°C ~ 70°C  
  Operating humidity 0% ~ 95%, non-condensing  
  Storage humidity 0% ~ 95%, non-condensing  
  Dimension (W x H x D) 90 mm x 190 mm x 21 mm  
  Weight 300g  
  Certificates CE, FCC, KC, RoHS, REACH, WEEE  
  Output TTL Output x 6  
Interface RS-485 1ch  
  AUX input 2ch Dry Contact Input  
  Relay 12 Relays  
Electrical Power Voltage: 12 VDC
Current: Max. 1 A
  Switch input VIH Max. 5 V (Dry Contact)  
  Relay Voltage: Max. 30 VDC
Current: 5 A

Compatible Devices

BioStation 2


Xpass S2

Secure I/O 2

BioStation A2

BioStation L2

BioEntry W2

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