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Magnetic Alarm Contact Switch, Window / Door Sensor, Surface Mount
Magnetic Window Door Sensor


Magnetic Window Door Sensor

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Product Code: MDS-1




The MDS-1 is a magnetic alarm contact switch that can be used as a door sensor or window sensor. This switch detects when a window or door has been opened so that video recording can be triggered on a surveillance DVR or network IP camera. The MDS-1 is surface mounted using the mount screws or adhesive tape (both are supplied).

Product Specification

  • Mount Screws Included
  • Adhesive Tape Included
  • Wire Range for Terminal: 18 to 24 gauge AWG
  • Max Contact Rating: 30VDC, 0.2A, 5W
  • Closed Gap 0.9” (23mm)
  • Departure Gap 0.94” (24mm)
  • Max. Initial Contact Resistance 0.150 Ω
  • Dimensions: 2 x 0.375 x 0.25 (Length x Width x Height in inches)

Magnetic Door Sensor DVR Alarm Recording Setup

Connect Magnetic Door Sensor to Security DVR Alarm Input

Watch this video to learn how to connect a magnetic door sensor to the alarm input of a Viewtron security camera DVR or IP camera NVR. The video also shows viewers how to configure the DVR to start video recording, take a snapshot image, and pop-up live video of a security camera when the door sensor is opened. You can also setup the DVR / NVR to send a push notification to the mobile app when the magnetic door sensor is opened. You can find complete setup instructions on how-to connect a magnetic door sensor to a DVR here.

Magnetic Door Sensor to DVR Wiring Diagram

How to Wire Magnetic Door Sensor to Security DVR Alarm Input

The above installation diagram shows how-to wire a magnetic door sensor / window sensor to the alarm input panel of a surveillance DVR.

  1. 18/2 power cable or 1 of the pairs from CAT-5 network cable is typically used to wire the alarm sensor to the DVR.
  2. One of the contacts of the door sensor has wire terminals that the cable attaches to.
  3. The right side of the diagram shows the alarm input block on the back of the DVR. One of the wires connects to an alarm input port and the other connects to a ground terminal. Please note that the maximum distance that you are run cable to dry contact door sensors is approximately 1000 feet.
  4. Last, the DVR must be configured to trigger an alarm and take some type of action such as video surveillance recording, image snapshots, and mobile app push notification.

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