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Products » OM-120
OM-120 - Multiple 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

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 300 g
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