KY-025 DC3.3V-5V Reed Switch Sensor Module Magnetic Control Switch For Arduino
2,44 €
The reed switch needs to be used in conjunction with a magnet. When a certain magnetic force is sensed. Relay Module. It will be in an on state, the module outputs a low level, and when there is no magnetic force, it is in a disconnected state and outputs a high level.
Jetzt bei Ebay:
