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E3X-SD21 Safety Light Curtain | F3SJ Series Industrial Safety Sensor

The OMRON E3X-SD21 is a simple, low-cost fiber amplifier unit from the E3X-SD series. It features a digital display, direct key settings, and a high-power "GIGA RAY" red LED light source for stable detection of minute and low-reflective objects .

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Specifications Specification Category Parameter / Value General Product Type Fiber Amplifier Unit Series E3X-SD Light Source Red LED (GIGA RAY high-power element) Connection Method Pre-wired cable (2m or 5m length) Mounting Type DIN Rail mounting Housing Material PBT (Polybutylene Terephthalate) Degree of Protection IP50 Weight Approx. 90 g Electrical Output Configuration NPN open-collector Supply Voltage 12 to 24 VDC (ripple p-p 10% max.) Current Consumption 40 mA max. (No-load) Max. Load Current 50 mA Operation Mode Light-ON / Dark-ON (selectable) Performance Response Time (Standard) 250 µs (0.25 ms) typical / 2 ms max. Switching Frequency 2,500 Hz max. Sensitivity Setting Manual (UP/DOWN) or TEACH mode Indicators Digital display (red, 4-digit), Output indicator Environmental Ambient Temperature (1-3 units) -25 to 55 °C Ambient Temperature (4-11 units) -25 to 50 °C Ambient Humidity (Operating) 35% to 85% Physical Dimensions Width 10 mm Height 31.5 mm Depth 64.3 mm