Single display digital fiber amplifier

E3X-SD allows easy one button setting and provides the best value performance ratio for standard applications.

  • Auto-teaching during machine operation
  • 2-point teaching within a few seconds
  • Simple threshold adjustment with up/down keys
Specifications & ordering info

Ordering information


Order code

NPN output

PNP output


E3X-SD21 2M

E3X-SD51 2M

Fiber amplifier connector1



Fiber amplifier connectors




Order code


Fiber amplifier connector

2 m PVC cable



30 cm PVC cable with M12 plug connector (4 pin)

E3X-CN21-M1J 0.3M

30 cm PVC cable with M8 plug connector (4 pin)

E3X-CN21-M3J-2 0.3M




Light source (wave length)

Red, 4-element LED (625 nm)

Power supply voltage

12 to 24 VDC ±10%, ripple (p-p): 10% max.

Protective circuits

Power supply reverse polarity protection, output short-circuit protection, mutual interference prevention

Response time

Operation or reset: 200 µs max

Sensitivity setting

Teaching and digital up/down keys


Auto power control

High-speed control method for emission current

Mutual interference prevention

Optical communication sync. possible for up to 5 units

Digital displays

Incident level or threshold

Degree of protection

IEC 60529 IP50 (with protective cover attached)

Easy operation by ergonomic buttons



2-point teaching

1. Order connector separately. For M8 connector models see E3X-HD.

1. Order connector separately. For M8 connector models see E3X-HD.

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