Specifications Parameter Specification Product Name Color Mark Photoelectric Sensor Brand OMRON Model E3S-DCN21 Series E3S-DC Detection Specifications Parameter Specification Sensing Method Diffuse-reflective (mark detection) Sensing Distance 10 ±3 mm (with 10 x 10 mm white paper) Spot Size (Reference) 1 x 4 mm Light Source Red LED (635 nm), Green LED (525 nm), Blue LED (465 nm) Output Specifications Parameter Specification Output Configuration NPN open-collector Operation Mode ON when mark is detected Load Current 100 mA max. (30 VDC max.) Protection Circuits Output short-circuit protection, Output reverse polarity protection, Power supply reverse polarity protection Electrical Specifications Parameter Specification Supply Voltage 10 to 30 VDC, ripple (p-p) 10% max. Power Consumption 960 mW max. (approx. 40 mA max. at 24 VDC) Performance Specifications Parameter Specification Response Time (2-point teaching) Operate/Reset: 50 µs max. each Response Time (1-point teaching) Operate/Reset: 150 µs max. each Sensitivity Setting Teaching method (1-point or 2-point) Ambient Illuminance Incandescent lamp: 3,000 lx max. Mechanical & Environmental Specifications Parameter Specification Housing Material Diecast zinc (nickel-plated brass) Lens Material Methacrylate resin (PMMA) Degree of Protection IEC 60529 IP67 Connection Method M12 4-pin connector Operating Temperature -10°C to 55°C (with no freezing or condensation) Storage Temperature -25°C to 70°C (with no freezing or condensation) Operating Humidity 35% to 85% (with no condensation) Storage Humidity 35% to 95% (with no condensation) Vibration Resistance (Destruction) 10 to 55 Hz, 1.5 mm double amplitude, 2 hours each in X, Y, Z directions Shock Resistance (Destruction) 500 m/s², 3 times each in X, Y, Z directions Insulation Resistance 20 MΩ min. (at 500 VDC) Dielectric Strength 1,000 VAC, 50/60 Hz for 1 min Physical Specifications Parameter Specification Indicators Operation indicator (orange), RUN indicator (green), 7-segment indicator (white), Key lock indicator (white), Timer indicator (white), 1-point teaching mode indicator (white) Weight (Packed) Approx. 370 g Weight (Unit only) Approx. 320 g