How It Works Shipping Fee Terms of Use

Model MGD-QW202 Bipolar Detection High-sensitivity Electromagnetic Sensor


  • Magnet detection
  • Automatic guided vehicles guidance


  • Uses a magnetism focusing construction (patented) that makes it particularly strong against ambient temperatures.
  • The magnetism focusing construction is very useful as the sensor can detect at a long distance targets with a wide surface but a weak magnetic flux, like belt-shaped rubber magnets.
  • The detected poles (N pole and S pole) are output separately.
  • Equipped with protection diodes to protect the sensor from reverse connection to the power supply and output surges.
  • The LEDs displaying the operation (red for N pole detection and green for S pole detection) make it easy to grasp the operation condition.

International Standards

  • Our products do not have overseas safety regulations such as CE mark, UL standard, EN standard etc.
  • Products is compliant to the RoHS directive.

* Please consult about "change of specification" and "request of specification" of the product.


Rating / Performance

Model MGD-QW202
Detection Surface Front side detection
Detection Sensitivity 2,000 μT ± 400 μT
Power Supply Voltage 12 V to 24 V DC (Operating voltage range : 10 V to 30 V DC), Ripple 1% or less
Power Consumption 20 mA DC or less
Output 30 V DC 50 mA DC or less NPN transistor open collector 
Output Residual Voltage 1 V DC or less (Load current 50 mA DC)
Operation Configuration Normally open (On with magnetic field)
Operation Display LED : Red with N pole detection, Green with S pole detection
Response Time 300 μs or less
Hysteresis 350 μT or less (With a rubber plate magnet of 30 × 30 × t1.5 mm)
Detection Polarity N pole and S pole
Reference Detection
25 mm (*The MG40-1R5 series)
Operating Set Distance 5 to 18 mm (*The MG40-1R5 series)
Operating Temperature
-10 to 60 °C (-20 to 65 °C during storage)
(Without dew condensation or freezing)
Operating Humidity
95% RH or less (95% RH or less during storage) (Without dew condensation)
Withstand Voltage 1 min at 500 V AC 50/60 Hz (Between the live part and case)
Insulation Resistance 100 MΩ or more measured with an ohmmeter at 500 V DC
(Between the live part and case)
Vibration Resistance Durability : 2 hours in each X, Y, Z direction at 10 to 55 Hz and with peak-to-peak amplitude of 1.5 mm (At power off)
Shock Resistance Durability : 3 times at 500 m/s² (approx. 50 G) in each X, Y, Z direction
(At power off)
Protection Rating IP67
Case Material ABS
Cable ø4, 4-core round cord of 0.2 mm² and 1 m in length (Oil and heat resistant)
Weight Approx. 32 g


External Dimensions Diagram/Output Circuit

External Dimensions Diagram


Output Circuit



Usage Precautions

  • If the object on which the electromagnetic sensor is installed is made of magnetic metal, the detection sensitivity may greatly vary. In such a case, place it at 40 mm above the installation surface and verify the detection characteristics before using the sensor.
  • If there is magnetic metal with residual magnetism in the surroundings of the electromagnetic sensor installation location, the detection characteristics may greatly vary. Verify the detection characteristics before using the sensor.
  • See Electromagnetic sensor general usage precautions for other precautions.


Detection Area Diagram

Precautions with Detection Area Diagram and Reverse Polarity Flux (Typical Example) 



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Model Name Operating sensitivity Standard Price Inventory Type Select
MGD-QW202 2.0 mT
36 USD
33 EUR

STD Shipping is available immediately (on the day of order)

WIP Shipping is available within 1 to 3 weeks

BTO Shipping is available within 10 to 18 weeks

NOTE: The above information shows the typical delivery time. For actual delivery time, please confirm us as it depends on our business days and/or product quantities.

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