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Home / All / Sensor Products / Photoelectric Sensors / DK-GF18 Series / DK-GF18-50NO-ZAA Diffuse Reflection Photoelectric Sensor, 30-500 mm, NPN NO
DK-GF18-50NO-ZAA Diffuse Reflection Photoelectric Sensor, 30-500 mm, NPN NO
DK-GF18-50NO-ZAA Diffuse Reflection Photoelectric Sensor, 30-500 mm, NPN NODK-GF18-50NO-ZAA Diffuse Reflection Photoelectric Sensor, 30-500 mm, NPN NO

DK-GF18-50NO-ZAA Diffuse Reflection Photoelectric Sensor, 30-500 mm, NPN NO

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CategoriesDK-GF18 Series
BrandDADISICK
Product SpecificationsDK-GF18-50NO-ZAA
ModelDK-GF18-50NO-ZAA
Sensing modeDiffuse reflection
Sensing distance30-500 mm adjustable
Light source850 nm infrared
Operating voltage10-30 V DC
OutputNPN NO, DC 3-wire
Protection levelIP55
Housing50 x 50 x 18 mm, ABS
Response time5 ms
Switching frequency100 Hz
ConnectionØ6.5 mm 2 m PVC cable
WeightAbout 93 g
CertificationCE, RoHS
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Detail Information

DADISICK · DK-GF18 Series

DK-GF18-50NO-ZAA Diffuse Reflection Photoelectric Sensor

DC 3-wire diffuse reflection sensor with an adjustable 30-500 mm sensing distance and an NPN normally-open output. Part of the DK-GF18 square sensor series in a 50 x 50 x 18 mm ABS housing.

  • 30-500 mm adjustable
  • 10-30 V DC
  • NPN NO
  • IP55
  • CE
  • RoHS
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DK-GF18-50NO-ZAA diffuse reflection photoelectric sensor with bracket
DK-GF18 square housing with red LED indication and 2 m PVC cable.

Technical parameters

ParameterValue
Sensing distance30-500 mm, adjustable
Light source850 nm infrared light
No-load current≤30 mA
Protection levelIP55
Connection methodØ6.5 mm 2 m PVC cable, 3x0.33 mm² / 4x0.33 mm²
WeightAbout 93 g
Operating voltage10-30 V DC
Output typeDC 3-wire NPN NO
Maximum load current150 mA
Voltage drop<1.5 V
Leakage current<0.01 mA
Switching frequency100 Hz
Response time5 ms
Short-circuit protectionYes
Overload protection point300 mA
Switching hysteresis<15% (Sr)
Repeat accuracy<5% (Sr)
Working temperature0 °C to +55 °C
Standard detection object200 x 200 mm white cardboard
Housing50 x 50 x 18 mm, ABS
IndicatorRed LED
CertificationCE, RoHS

All values are taken from the DK-GF18 technical data sheet, revision dated 2026-04-20. Dimensions are for reference only; please refer to the actual measurement.

Dimensions

DK-GF18 DC version dimension drawing 50 mm x 50 mm x 18 mm
DC version outline: 50 x 50 mm face, 33 mm body depth, 18 mm thickness, Ø5 mm cable entry.
DK-GF18 sensor with 2 m PVC cable and reflective board
Sensor with 2 m PVC cable; a reflective board is supplied with retro-reflective versions.

Wiring

DC 3-wire NPN NO wiring diagram for DK-GF18-50NO-ZAA
DC 3-wire NPN NO connection. Brown to +10-30 V DC, Blue to 0 V, Black to the load.
Wire colourFunction
Brown (1)+10-30 V DC
Blue (3)0 V
Black (2)Switched output to load (NO)

Confirm the wiring against the label of the unit received before energising. Do not connect the output to a load exceeding the rated current.

Request a quotation for DK-GF18-50NO-ZAA

Tell us the target object, sensing distance, supply voltage and quantity. Our engineers will confirm the exact part number and send you a quotation. This model is a general-purpose photoelectric sensor for object detection; it is not a safety-rated device and must not be used for personnel protection.

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