Built-in amplifier photoelectric sensors

PZ series

This model has been discontinued.

Recommended Replaceable Products: Square Transmissive Cable Type, NPN - PZ-G51N

Square Transmissive Cable Type, NPN PZ-51L

PZ-51L - Square Transmissive Cable Type, NPN

  • UL Recognition(us)





Thrubeam model, L model

Detecting distance

7 m 23.0'

Light source

Infrared LED

Detectable object

Opaque material with an area of 8 mm2 or more


Sensitivity adjustment

1-turn trimmer (240°)

Response time

1.5 ms max.

Operation mode

LIGHT-ON/DARK-ON (switch-selectable)

Indicator lamp

Output and power:*1 red LED, stable operation: green LED


Control output

Maximum NPN open-collector output: 100 mA or less (40 V or less)

Stability output

Maximum NPN open-collector output: 50 mA or less (40 V or less)

Protection circuit

Reversed polarity, overcurrent protection, surge absorber


Power voltage

12 to 24 VDC ±10 %, Ripple (P-P) 10 % or less

Current consumption

Transmitter: 20 mA or less, Receiver: 25 mA or less

Environmental resistance

Enclosure rating


Ambient light

Incandescent lamp: 5,000 lux or less, Sunlight: 20,000 lux or less

Ambient temperature

-20 to +55 °C -4 to 131 °F (No freezing)

Relative humidity

35 to 85 % RH

Vibration resistance

10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions

Case material

Fiberglass reinforced plastic


Transmitter: Approx. 60 g, Receiver: Approx. 70 g
(including 2-m 6.6' cable)

*1 Only the transmitter is equipped with a power indicator.

Other Models