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Magnetic Contact Switch

Detect when a door, window or box opens! Place the magnet on one side and the sensor (with wires) on the other. When the Magnet is within 3cm of the sensor, the 2 wires will be connected.

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Tinkersphere

TS-721

$3.99

Detect when a door, window or box opens! Place the magnet on one side and the sensor (with wires) on the other. When the Magnet is within 3cm of the sensor, the 2 wires will be connected.

Contents:

  • Magnetism Sensor / Reed Switch (with wire leads)
  • Magnet

 

Features:

  • Plastic Housings with Screw Holes
  • Adhesive backing for both pieces for easy mounting in your projects
  • Detect when a door, box, window or other item closes!
  • Great for alarms, music boxes, drawers and other times you want to know whether something is open or closed.