3pcs KY-025 4pin Magnetic Dry Reed Pipe Switch Magnetron Sensor Switch Module For Arduino

Applications: This module can be apply in Program-controlled switches, copiers, washing machines, refrigerators, cameras, Disinfection cabinet, door, window magnetic, electromagnetic relays, electronic weighing, level meter, gas meter, water meter and so on. Specificatons: working voltage 3.3V-5V output format: digital switching output (0 and 1) PCB size: 3.2cm x 1.4c using a wide voltage LM393 comparator clean, good waveform driving ability ,more than 15mA. a fixed bolt holes for easy installation Package Included: 3 x KY-025 4pin Reed Module