Product description Linear Magnetic Hall Effect Sensor Module Linear Hall magnetic module and number 13 comes with LED build a simple circuit to produce magnetic field warning lamp. Use digital 13 interface comes with the LED. The linear Hall magnetic module connected digital 3 interfaces. When the linear Hall magnetic module senses detected the key signal. LED lights on, otherwise off. KY-024 Hall Magnetic Standard Linear Module For Arduino Linear Magnetic Hall Effect Sensor Red Color: Red Material: metal Size: 25*12mm Package Contents : 10 x KY-024 Hall Magnetic Standard Linear Module Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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