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Home / All / Sensor Products / Photoelectric Sensors / DK-GF18 Series / DK-GF18 Series DC Diffuse Reflection Photoelectric Sensors
DK-GF18 Series DC Diffuse Reflection Photoelectric Sensors
DK-GF18 Series DC Diffuse Reflection Photoelectric SensorsDK-GF18 Series DC Diffuse Reflection Photoelectric Sensors

DK-GF18 Series DC Diffuse Reflection Photoelectric Sensors

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CategoriesDK-GF18 Series
BrandDADISICK
Product SpecificationsDK-GF18 Series / DC Diffuse (12 models)
SeriesDK-GF18 Series
Specification groupDC 3-wire / 4-wire Diffuse Reflection
Part numbers in group12
Sensing distance30-500 / 30-1500 mm adjustable
Light source850 nm infrared
Operating voltage10-30 V DC
Output optionsNPN / PNP, NO / NC / NO+NC
Protection levelIP55
Housing50 x 50 x 18 mm, ABS
Response time5 ms
ConnectionØ6.5 mm 2 m PVC cable
WeightAbout 93 g
CertificationCE, RoHS
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Detail Information

DADISICK · DK-GF18 Series · Group A

DC Diffuse Reflection Photoelectric Sensors

DC 3-wire and 4-wire diffuse reflection sensors with adjustable 30-500 mm and 30-1500 mm sensing distances. 12 orderable part numbers covering NPN and PNP outputs in NO, NC and NO+NC configurations.

  • 12 part numbers
  • 30-500 / 30-1500 mm
  • 10-30 V DC
  • NPN / PNP
  • IP55
  • CE · RoHS
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DK-GF18 series DC diffuse reflection photoelectric sensor with mounting bracket
DK-GF18 square housing, red LED indication and 2 m PVC cable.

Orderable models in this group

This group contains 12 orderable part number(s). Choose the output type and sensing distance you need, then quote the exact part number from the table below.

Part numberOutputWiresSensing distance
DK-GF18-50NO-ZAANPN NO3-wire30-500 mm
DK-GF18-50NC-ZAANPN NC3-wire30-500 mm
DK-GF18-50PO-ZAAPNP NO3-wire30-500 mm
DK-GF18-50PC-ZAAPNP NC3-wire30-500 mm
DK-GF18-50NS-ZAANPN NO + NC4-wire30-500 mm
DK-GF18-50PS-ZAAPNP NO + NC4-wire30-500 mm
DK-GF18-150NO-ZAANPN NO3-wire30-1500 mm
DK-GF18-150NC-ZAANPN NC3-wire30-1500 mm
DK-GF18-150PO-ZAAPNP NO3-wire30-1500 mm
DK-GF18-150PC-ZAAPNP NC3-wire30-1500 mm
DK-GF18-150NS-ZAANPN NO + NC4-wire30-1500 mm
DK-GF18-150PS-ZAAPNP NO + NC4-wire30-1500 mm

Output codes: NO / NC / NS = NPN NO / NC / NO+NC; PO / PC / PS = PNP NO / NC / NO+NC; J = relay output. 3-wire models use one switched output, 4-wire models provide NO + NC, and relay models provide NO + NC contacts.

Technical parameters

ParameterValue
Sensing distance30-500 mm / 30-1500 mm, adjustable
Light source850 nm infrared light
Standard detection object200 x 200 mm white cardboard
Output optionsDC 3-wire / 4-wire NPN or PNP, NO / NC / NO+NC
Operating voltage10-30 V DC
No-load current≤30 mA
Maximum load current150 mA
Leakage current<0.01 mA
Voltage drop<1.5 V
Switching frequency100 Hz
Response time5 ms
Short-circuit protectionYes
Overload protection point300 mA
Switching hysteresis<15% (Sr)
Repeat accuracy<5% (Sr)
Protection levelIP55
Working temperature0 °C to +55 °C
Connection methodØ6.5 mm 2 m PVC cable, 3x0.33 mm² (3-wire) / 4x0.33 mm² (4-wire)
Housing50 x 50 x 18 mm, ABS
IndicatorRed LED
WeightAbout 93 g
CertificationCE, RoHS

Every value is 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
50 x 50 mm face, 33 mm body depth, 18 mm thickness and 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 and a transmitter / receiver pair with through-beam versions.

Wiring

DK-GF18 DC 3-wire and 4-wire NPN PNP NO NC wiring diagrams
All six DC 3-wire / 4-wire NPN and PNP NO, NC and NO+NC connections used by this group.
Wire colourFunction
Brown (1)+10-30 V DC
Blue (3)0 V
Black (2 / 4)Switched output to load
White (2)Second switched output on 4-wire models
GrayNot used

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 quote for this specification group

Tell us the exact part number from the model table, the target object and distance, your supply voltage, and the quantity. Our engineers will confirm the configuration and send a quotation. This 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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