Reed Switch - Magnetic Field Sensor (Pack of 5)

Sparkfun ElectronicsSKU: RB-Spa-125
Manufacturer #: 5 x COM-08642

Price  :
Sale price £10.33

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Stock  :
Only 1 unit left

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  • Magnetic Field Sensor
  • Reed Switch
  • Open/closed functionality
  • Sold in packs of 5 reed switches

The Reed Switch is used as a simple magnetic field detecting sensor. When the sensor is exposed to a magnetic field, the two ferrous materials inside the glass envelope pull together and the switch closes, causing the circuit to close. When the magnetic field is removed, the reeds separate and the circuit opens. The sensor can carry up to 1.2A.

Note: Proximity and strength of the field to close the circuit must be determined by trial and error.

Customer Reviews

Based on 2 reviews
Great reed switch, just be careful as they are fragile.

Instead of purchasing a commercial magnetic on/off reed switch for my marine application I used RobotShop's reed switches along with Pololu's 16A Big Pushbutton Power Switch (RB-Pol-378) and their Mini Pushbutton Power Switch (RB-Pol-345). It worked out very well, but in the process I broke 3 of the very fragile reed switches. A word of caution... When working with the reed switch you must be very careful not to bend it's leads without clamping the wire directly beside the very breakable glass reed casing. Also, care should be taken with whatever method you use to support the switch as to not put any strain the leads or casing.

Very good

Great magnetic field switch. Be careful with the glass, use needle nose pliers when bending the leads to avoid breakage. Good price for 5 pieces.

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