Seeed 101020038 Grove - Magnetic Switch SPST Encapsulated Reed Type

Seeed Grove - Physical Sensor Modules - Seeed Studio 101020038, The Grove Magnetic Switch from Seeed Studio contains a dry reed switch that can be activated by a permanent magnet or electromagnet. The normally open switch is connected to a digital line and has a pull-down resistor giving a logic 0 signal. When a magnet approaches, the contacts close and the output goes to a logic 1. Seeed 101020038 Grove - Magnetic Switch SPST Encapsulated Reed Type

Price: 2.82 from Rapid Online Rapid Electronics Ltd.