E3Z-T81K-M3J Safety Light Curtain | F3SJ Series Industrial Safety Sensor

The Omron E3Z-T81K-M3J is a through-beam (opposed-mode) photoelectric sensor from the compact, built-in amplifier E3Z series. This model consists of both the emitter and receiver units as a complete set.

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Key Specifications Parameter Specification Product Type Through-beam photoelectric sensor (Emitter + Receiver set) Sensing Distance 15 m Sensing Method Through-beam (opposed) Standard Sensing Object Opaque object, 12 mm diameter minimum Light Source Infrared LED (870 nm) Output Type PNP open collector Load Current 100 mA max. Residual Voltage 1 V max. (load current < 10 mA); 2 V max. (load current 10–100 mA) Supply Voltage 12–24 V DC ±10% (ripple p-p 10% max.) Current Consumption Emitter: 15 mA max.; Receiver: 20 mA max. Response Time Operate or reset: 1 ms max. Operation Mode Light-ON / Dark-ON selectable (via internal switch) Sensitivity Adjustment Single-turn adjustment Directional Angle Emitter: 3 to 15°; Receiver: 3 to 15° Protection Circuits Output short-circuit protection, Output reverse polarity protection, Power supply reverse polarity protection Ambient Illumination Incandescent lamp: 3,000 lx max.; Sunlight: 10,000 lx max. Ambient Temperature (Operating) -25°C to 55°C (with no icing) Ambient Temperature (Storage) -40°C to 70°C Ambient Humidity (Operating) 35% to 85% (with no condensation) Degree of Protection IP67 (IEC); Oil resistance (excluding cables and connectors) per Omron standard Connection Method Pre-wired M8 connector, 0.3 m cable (M3J) Indicators Operation indicator (orange), Stability indicator (green), Power indicator (orange) Weight Approx. 50 g