
3x4 Matrix Keypad Module
Description
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3x4 matrix keypad with 12 tactile keys (0–9, *, #)
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Easy-to-use membrane-style keypad for input in embedded systems
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Connects to microcontrollers via 7-pin interface
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Compatible with Arduino, ESP32, Raspberry Pi, and other development boards
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Ideal for DIY electronics, security systems, access control, and menu navigation
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