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E3Z-LT81-L Safety Light Curtain | F3SJ Series Industrial Safety Sensor

The Omron E3Z-LT81-L is the emitter unit for a through-beam (opposed-mode) laser photoelectric sensor. It is part of the compact E3Z-LT series, which features a built-in amplifier. This unit is designed to work with the corresponding E3Z-LT81-D receiver to form a complete through-beam sensing pair .

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Key Specifications Parameter Specification Product Name E3Z-LT81-L Function Emitter unit for through-beam sensor Sensing Method Through-beam (opposed) - must be paired with E3Z-LT81-D receiver Sensing Distance 60 m (with receiver) Standard Sensing Object Opaque object Light Source Red semiconductor laser diode (Class 1) Laser Class Class 1 (JIS / IEC / FDA) Output Configuration (System) PNP (when paired with E3Z-LT81-D receiver) Supply Voltage 12–24 V DC ±10% Current Consumption 15 mA max. (emitter only) Response Time 1 ms max. (system response time with receiver) Ambient Temperature (Operating) -10°C to 55°C (with no freezing or condensation) Ambient Temperature (Storage) -25°C to 70°C Ambient Humidity (Operating) 35% to 85% (with no condensation) Degree of Protection IP67 (IEC) Connection Method Pre-wired, 2-meter cable Indicators Power indicator Weight Approx. 40 g Case Material Polybutylene terephthalate (PBT) Dimensions (H x W x D) 31 x 20 x 10.8 mm