4×3 Matrix Membrane Switch Keypad Arduino FTDI 232 Mini USB to TTL Converter Produces authentic multi-tone siren sounds

Produces authentic multi-tone siren sounds ideal for security systems

000+ hours MTBF

All MQ-2 modules are sourced from authorized distributors with complete authentication verification

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Industrial Solutions

4×3 Matrix Membrane Switch Keypad Arduino FTDI 232 Mini USB to TTL Converter Produces authentic multi-tone siren sounds4x3 Matrix Membrane Switch Keypad Arduino Quality electronics from The Engineer Store, Bengaluru. Fast shipping, 7 day warranty on manufacturing defects, expert support. Product Overview The 4x3 Matrix Membrane Switch Keypad is an essential input device for Arduino and microcontroller projects. This 12 button keypad features a reliable membrane switch design, making it ideal for creating custom control interfaces, security systems, calculators, and