S12-2 Emitter/Receiver Pair



An economical emitter and receiver pair, the S12-2 features a wide beam pattern in a small compact housing unit.

  • Small 12 mm (0.47 inch) diameter tubular opposed mode sensor pair
  • Fully threaded barrel allows easy mounting to bracket or panel with included M12 nuts
  • Easy-to-see status LED indicators for Power ON, Output Overload, Signal Received, and Marginal Signal
  • Wide beam pattern makes sensor alignment easy at long ranges
  • Emitter beam inhibit to verify normal sensor operation before motion
  • Robust epoxy encapsulated electronics for reliable use in industrial environments

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Product Specifications

Sensing Beam880 nm Invisible Infrared beam
Sensing Range20 m (65.6 ft)
Supply Voltage and Current Consumption10 to 30 V dc; less than 25 mA (emitters) or 15 mA (receivers) exclusive of load
Supply Protection CircuitryProtected against reverse polarity and transient over voltages
Delay at Power-upLess than 1 second
Output ConfigurationOne solid state output, NPN (sinking) or PNP (sourcing), depending on model
Output Rating100 mA
OFF-state leakage current: < 10 μA
ON-state saturation voltage: < 0.2 V at 10 mA; < 0.8 V at 100 mA
Output Protection CircuitryProtected against output short circuit, continuous overload, and transient over voltages
Output Response Time11 ms ON, 7 ms OFF
Input Configuration (emitter only)Emitter beam inhibit
Repeatability1.5 ms
IndicatorsGreen Power LED (emitter and receiver):
• ON indicates power on
• Flashing indicates output short circuited (receiver only)

Red Output LED (receiver only):
• ON indicates light sensed
• Flashing indicates marginal excess gain (1.0 to 1.5x excess gain)
ConstructionHousing: Polycarbonate with epoxy encapsulated

electronics Lens:Polycarbonate
Cable:PVC jacket
Environmental ratingIP67
Connections2 m (6.5 ft) cable or 150 mm (6 inch) pigtail with M8

threaded connection
Operating ConditionsTemperature: −25 °C to +50 °C (−13 °F to +122 °F)