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Home / All / Sensor Products / Photoelectric Sensors / DK-GF18 Series / DK-GF18 Series AC/DC Relay Output Retro-reflective Sensor
DK-GF18 Series AC/DC Relay Output Retro-reflective Sensor
DK-GF18 Series AC/DC Relay Output Retro-reflective SensorDK-GF18 Series AC/DC Relay Output Retro-reflective Sensor

DK-GF18 Series AC/DC Relay Output Retro-reflective Sensor

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CategoriesDK-GF18 Series
BrandDADISICK
Product SpecificationsDK-GF18 Series / AC-DC Relay Retro
SeriesDK-GF18 Series
Specification groupAC/DC 5-wire Relay Retro-reflection
Part numbers in group1
Sensing distance30-4000 mm adjustable
Light source940 nm infrared
Operating voltage12-240 V DC / 24-240 V AC
Output options5-wire relay, NO + NC
Maximum load current3 A / 30 V AC, 1 A / 220 V AC
Protection levelIP55
Housing50 x 50 x 18 mm, ABS
Response time20 ms
ConnectionØ6.5 mm 2 m PVC cable
WeightAbout 97 g + 10 g reflective board
CertificationCE, RoHS
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Detail Information

DADISICK · DK-GF18 Series · Group E

AC/DC Relay Output Retro-reflective Sensor

AC/DC wide-voltage retro-reflective sensor with an adjustable 30-4000 mm sensing distance and a built-in 5-wire relay output rated 3 A / 30 V AC or 1 A / 220 V AC. Supplied with a reflective board.

  • 30-4000 mm
  • 12-240 V DC / 24-240 V AC
  • Relay output
  • IP55
  • Reflector included
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DK-GF18 series AC DC relay output retro-reflective sensor with reflector
Retro-reflective AC/DC version shown with the supplied reflective board.

Orderable models in this group

This group contains 1 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-GF18-400J-ZCBRelay output, NO + NC5-wire30-4000 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 distance30-4000 mm, adjustable
Light source940 nm infrared light
Standard detection object200 x 200 mm white cardboard
Output optionsAC/DC 5-wire relay output, NO + NC
Operating voltage12-240 V DC / 24-240 V AC
No-load current≤20 mA
Maximum load current3 A / 30 V AC, 1 A / 220 V AC
Voltage drop≤2.5 V
Switching frequency10 Hz
Response time20 ms
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
Housing50 x 50 x 18 mm, ABS
IndicatorRed LED
WeightAbout 97 g + 10 g reflective board
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 AC DC retro-reflective dimension drawing with reflective board
Sensor outline (50 x 50 x 18 mm) and the supplied reflective board (61 x 50 mm).
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 AC DC 5-wire relay output wiring diagram
AC/DC 5-wire relay output. Brown supply, Blue 0 V, Black NO, Gray COM, White NC.
Wire colourFunction
Brown+12-240 V DC / 24-240 V AC
Blue0 V
BlackNO contact
GrayCOM terminal
WhiteNC contact

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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