The module works when a magnet or a magnetized object is brought close to the reed tube. The module has a DO digital output. When the magnet is brought closer, a signal appears on both outputs. High logical level appears on the DO output. It can be freely used (switching on a diode, a transistor, etc.) ​​​​​​​Technical data: - Module power supply: 3.3 - 5VDC. - Based on LM393 comparator - LED indicating the presence of power - Tile dimensions: 3.2 x 1.4 cm - Permissible load capacity of the outputs: 15mA https://elecena.pl/product/22626666/reed-switch-sensor-module-with-lm393-arduino-avr 2023-02-23 https://elecena.pl/product/22626666/reed-switch-sensor-module-with-lm393-arduino-avr 2025-10-28