The Optex OS-12C active infrared safety beam system is compatible with any type of automatic door. Its control box and beam heads are designed for fast, simple installation while maintaining the highest standards of safety and reliability.

Easy-to-install amplifier

The Optex OS-12C amplifier has screwless wiring terminals, which speeds installation. Pressing the “Teach-In” button automatically sets the proper sensitivity and self-corrects crossed cables. One amplifier operates one or two pairs of sensor heads.

Reliable sensor heads

The Optex SH-7MC/SH-10MC sensor heads are recognized by door professionals worldwide for their reliability and resistance to sunlight and other interference. Quick-disconnect plugs make installation and service fast and easy. Cables are available in 2 lengths, 7m (23 feet) or 10m (33 feet).


For maximum safety, the amplifier is fail-safe, which ensures that the doors remain open in case components are damaged in any way. Two LED indicators will blink at the initial setup to alert the installer if the OS-12C is improperly aligned or if sensitivity is insufficient.

Multifunctional design

The compact design and standard 15mm beam heads make the OS-12C compatible with any type of automatic door and easy to service or maintain. Optional mounting accessories allow surface or recessed installation, and include a reflector kit for simplified wiring. This safety beam is optimal for use with any sliding door, including train doors and automatic gates.


Optex automatic door sensors guarantee premium performance and include a 3-year full replacement warranty.


Order the OS-12C


Model OS-12C/OS-12CR
Detection area adjustments 0-10 m (0’’-33’’)(OS-12CR: 0-2 m (0”-6’7”))
Detection method Point to point near infrared light beam
Power Supply 12 – 24V AC/DC
Current Draw 135mA max.
Power/Operating Indicator LED-ON (Green/Red): Stand-by LED-OFF (Green/Red): Detection LED-Blink(Green/Red): Insufficient sensitivity
Output Contact “Form C”- relay 50V, 0.3A (resistance load)
Response time Approx. 0.1s (from the moment of beam cut-off)
Relay Hold Time Approx. 0.5s
Operating Temperature -20ºC – +55ºC
Light Resistance > 100.000 lux
Outer Dimensions Amplifier: 93 x 46 x 32 mm (w x h x d) Sensorheads ø 15 mm
Weight Amplifier 65 g (2.5oz)
Note Sensor heads (SH-10MC) are necessary for operation and should be ordered separately. Either one or two cables can be used with each amplifier.

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