Product Category

Broad Slot-type Photomicrosensor

EE-SPX303N / SPX403N

A Wide Slot Width of 13 mm and Superior Resistance to Light Interference and Noise.



Sensing distance

13 mm (slot width)

Sensing object

Opaque: 2.2 × 0.5 mm min.

Differential distance

0.05 mm max.

Light source

Infrared LED (pulse lighting) with a peak wavelength of 940 nm


Light indicator (red)

Supply voltage

12 to 24 VDC ±10%, ripple (p-p): 5% max.

Current consumption

15 mA max.

Control output

NPN voltage output:
 Load power supply voltage: 12 to 24 VDC
 Load current: 80 mA max.
 OFF current: 0.5 mA max.
 80 mA load current with a residual voltage of 2.0 V max.
 10 mA load current with a residual voltage of 1.0 V max.

Protection circuits

Power supply reverse polarity protection, Output reverse polarity protection

Response frequency *

100 Hz min.

Ambient illumination

3,000 lx max. with incandescent light or sunlight on the surface of the receiver.

Ambient temperature range

Operating: -10 to +55°C
 Storage: -25 to +65°C

Ambient humidity range

Operating: 5% to 85%
 Storage: 5% to 95%

Vibration resistance

Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 h each in X, Y, and Z directions

Shock resistance

Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions

Degree of protection


Connecting method

Special connector (soldering not possible)


Approx. 4 g




* The response frequency was measured by detecting the following rotating disk.  image