S18-2 Series


  • Advanced ASIC (Application Specific Integrated Circuit) technology is resistant to fluorescent light and offers a higher level of crosstalk avoidance
  • Powerful and bright visible red emitter beam for easy alignment and set-up
  • Highly visible output, dual-function power and stability indicators
  • Wide operating temperature range: -40 to +70° C
  • Robust 250° sensitivity potentiometer on diffuse models
  • Cost-effective ABS plastic housing is well sealed against water ingress
  • Available in Emitter/Receiver, Polarized Retroreflective, Retroreflective, Diffuse, and Fixed Field models.

Product Specifications

Supply Voltage10 to 30V dc for ambient temperature ≤ 55 °C

10 to 24V dc for ambient temperature > 55 °C
Supply Current (Exclusive of Load Current)Diffuse: 16 mA
Opposed Mode Emitters:17 mA
Opposed Mode Receivers::8 mA
Polarized Retro::16 mA
Supply Protection CircuitryProtected against reverse polarity and transient voltages
Output ConfigurationComplementary PNP or NPN by model number
Output Rating≤ 100 mA total current through both outputs ≤ 55 °C

≤ 50 mA total current for ambient temperatures > 55°C
OFF-State Leakage Current:< 50 μA at 30V dc
ON-State Saturation Voltage:< 1.5V at 10 mA; < 2.75V at 100 mA
Environmental RatingIEC 60529 IP67
Vibration and Mechanical ShockAll models meet Mil. Std. 202F requirements. Method 201A (Vibration; frequency 10 to 60 Hz, max., double amplitude 0.06 in acceleration 10G). Method 213B conditions H&I (Shock: 75G with unit operating; 100G for non-operation)
IndicatorsThree LEDs (1 green, 2 yellow)
Green on solid:indicates power applied and sensor ready
Green flashing:indicates marginal sensing signal
Yellow on solid:indicates Pin 4 (black wire) output conducting
AdjustmentsDiffuse mode: Single turn sensitivity (gain) adjustment potentiometer
ConstructionHousings: ABS
Front Window:PMMA
QD Connector:ABS
Indicator Windows:Clear ABS
Gain Pot Driver:ABS
Output Protection CircuitryProtected against false pulse on power-up and continuous short circuit of outputs. Short circuit protection at elevated temperature may require a power cycle to reset.
Emitter LED WavelengthAll models: 624 nm
Output Response TimeResponse is independent of signal strength Opposed mode:1.5 milliseconds ON, 1.0 milliseconds OFF
Polarized Retro and Diffuse:1.5 milliseconds ON, 0.75 milliseconds OFF
Delay on Power-up:100 milliseconds, outputs do not conduct during this time
RepeatabilityRepeatability is independent of signal strength Opposed mode:170 microseconds
Polarized Retro and Diffuse modes:100 microseconds
Operating ConditionsTemperature: −40 °C to +70 °C (−40 °F to +158 °F) Maximum relative humidity:95% at +50 °C (noncondensing)


Data Sheets

Document Name Part Number File Size Download
1. S18-2 Plastic 18 mm Barrel Sensors 170670 Download

Chinese - Simplified


Data Sheets

Document Name Part Number File Size Download
1. S18-2 Series -- Datasheet
170670_FR Download


Data Sheets

Document Name Part Number File Size Download
1. S18-2 Series -- Datasheet
170670_DE Download


Data Sheets

Document Name Part Number File Size Download
1. S18-2 Series -- Datasheet
170670_IT Download


Banner Insider eNewsletter

Helpful application information, new product updates, answers to frequently asked questions, and more.

Subscribe Now »

Worldwide Distributors

Banner has more than 3,000 distributors—ready to help you. Enter your U.S. city or zip.

06828 [change]

Find international distributors