Magnetic sensor to open door / window - reed contact CMD932

Index: SES-03128 EAN: 5904422365875

Wired proximity sensor activated magnetically. The device is used to determine the position of doors and windows. Case dimensions - 9.0 x 32 mm.

Magnetic sensor to open door / window - reed contact CMD932
€2.03 tax excl.
Shipping in 24 hours
30-day returns
PayPal payment
Manufacturer: OEM


Wired proximity sensor activated magnetically. The device is used to determine the position of doors and windows. The principle of operation is similar as in a traditional relay. The circuit is open by default, when approaching the magnet, circuit is being closed, which means that through the wires, the current begins to flow.

Czujnik magnetyczny otwarcia drzwi/okien - kontaktron CMD932


The sensor can be easily connected to any cip with a microcontroller, e.g. an Arduino. By attaching a pulling up resistor or by running an internal pull-up, the read can be implemented in digital form.


Communication with Arduino

To verify that the functionality of the sensor, use the attached to the Arduino program - DigitalInputPullup, which is in the menu: File -> Examples -> Digital. It is sufficient to connect one sensor's wire to ground GND, the other to the pin No. 2 of Arduino, and when bringing together both parts of the sensor, the built-in L led connected to pin 13, will light up.




  • Working voltage: up to 40 V
  • Maximum current: 0.1 A
  • Internal resistance: about 200 Ω
  • Range: up to 25 mm
  • Mode of operation: off by default
  • Housing color: white
  • Dimensions: 9 x 32 mm
  • Cable length: approx. 20 cm



  • The sensor with wires
  • The magnetic element



Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

Payment methods

Card image cap
  • Botland is a PayPal verified seller. Protect your financial information with this fast, safe and secure online payment system.

Card image cap
  • Choose easy and quick PayU e-payment method. Your financial information will stay secure.

Customers who bought this product also bought:

Products from the same category: