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Key Switch Keyboard Button Module Board KY-004 For Arduino UNO Mega PIC AVR Raspberry pi
Key switch module KY - 004 is a standard push button module commonly found keyboards and mice. It has a pull down to ground on the signal pin. Key switch...
5V Magnetic Reed Switch Sensor | Reed Switch Sensor Module compatible with Arduino - Photocopiers/Washing Machines/Refrigerators/Doo
This module can be applied 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...