Key Specifications Parameter Specification Brand OMRON Model E3T-ST23 Series E3T Sensor Type Photoelectric sensor (Built-in amplifier) Sensing Method Through-beam Sensing Distance 300 mm Output Configuration PNP open-collector Operation Mode Light-ON (Output ON when light is received) Light Source Red LED (650 nm wavelength) Standard Sensing Object Opaque, 2 mm diameter minimum Minimum Sensing Object 2 mm diameter (opaque) Directional Angle Emitter: 2° to 20°; Receiver: 2° to 70° Supply Voltage 12 to 24 VDC ±10% (ripple p-p 10% max.) Current Consumption Emitter: 10 mA max.; Receiver: 20 mA max. Load Current 50 mA max. (26.4 VDC max.) Residual Voltage 1 V max. (load current <10 mA); 2 V max. (load current 10-50 mA) Response Time Operate or reset: 1 ms max. Protection Circuits Output short-circuit, output reverse polarity, power supply reverse polarity Physical & Environmental Specifications Parameter Specification Appearance Rectangular type (Side-view) Connection Method Pre-wired cable (standard 2 m length) Protection Rating IP67 (IEC 60529) Body Dimensions (W x H x D) 9.5 mm x 18.5 mm x 7 mm Housing Material PBT (Polybutylene terephthalate) Lens Material Denatured polyarylate Indicators Operation indicator (orange), Stability indicator (green) Operating Temperature -25°C to 55°C (no freezing or condensation) Storage Temperature -40°C to 70°C Operating Humidity 35% to 85% (no condensation) Vibration Resistance 10 to 2,000 Hz, 1.5 mm double amplitude or 300 m/s² for 0.5h each direction Shock Resistance 1,000 m/s², 3 times each in X, Y, Z directions Insulation Resistance 20 MΩ min. (500 VDC megger) Dielectric Strength 1,000 VAC, 50/60 Hz for 1 minute Ambient Illuminance Incandescent lamp: 5,000 lx max.; Sunlight: 10,000 lx max. Weight (packed) Approx. 40 g