M18 diffuse photoelectric sensor ODP1-18.71.FU1

Sn=200mm, 2-wire NO, 90-240VAC, 10-300mA, M18x65mm

Price 41.08 EUR no VAT

The ODP1-18.71.FU1 infrared photoelectric diffuse sensor for alternating current consists of a transmitter and a receiver located in a cylindrical plastic housing M18x65mm. The optical sensor has a normally open output. The maximum distance of operation of the diffuse sensor is 200mm. The optoelectronic sensor ends with a 2-wire PVC connecting cable with a length of 2m and has an LED indicator showing the output state of the optical sensor. The sensor's output has no protection of short circuit. AC sensor designated with the symbol (U2) have an operating voltage 40-100VAC, with symbol (U3) it is 20-50VAC (by request).

Application and operating principle

The M18 presented photoelectric diffuse sensor is used for switching two-wire alternating current circuits. The optical sensor emits modulated ray of light, which is reflected by the passing (coming near) object and returns back to the sensor. When an object passes in front of the sensor active surface its output switches from one state to another. The output indicator is on, when there is an object in front of the sensor. The nominal switching distance of the optical sensor is measured by the help of white cardboard with size 100x100 mm.


Operating distance, Sn 0...200 mm
Supply voltage, Us
90...240 VAC / 40...60Hz (U1)
40...100 VAC / 40...60Hz (U2)
24 ... 50 VAC / 40...60Hz (U3)
Residual voltage (max), Ures 4.4 VAC
Load current (max), Iout 10...300 mA
Current consumption, Is 3 mA
Switching frequency (max), fo 10 Hz
Spectrum area of operating 850…950 nm
Operating ambient illumination 10’000 Lx
Operating temperature range, Tamb -25°…+70° C
Degree of protection IP54
Light output indicator LED
Connection cable 2x0.5 mm², L=2 m, PVC
Overall dimensions M18x1, L=65 mm
Housing - plastic PVC

Scheme of connection


Overall dimensions (mm)

Overall dimensions of M18-AC diffuse optical sensor

Short description

The M18 diffuse optoelectronic sensor is used in industrial systems, as electronic automation equipment for switching at 2-wire electrical circuits of alternating current. When an object passes in front of the active part of the optical sensor, its output switches. The diffuse photoelectric sensor there is a longer period of work due to contactless switching of the electrical circuits in which is included.


ODP1-18.71.FU190...240 VACNO
ODP1-18.72.FU190...240 VACNC
ODP1-18.71.FU240...100 VACNO
ODP1-18.72.FU240...100 VACNC
ODP1-18.71.FU320...50 VACNO
ODP1-18.72.FU320...50 VACNC