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

3V - 5V DC Output Type Digital (High/Low TTL) Detection Range 2 cm - 30 cm (adjustable via potentiometer) Detection Angle ~35 degrees effective cone IR Wavelength ~940 nm (near-infrared) Output Current >= 15 mA (can drive small loads directly) Operating Current ~20 mA typical Onboard Indicators Power LED (Red) + Signal LED (Green) Sensitivity Adjustment Onboard multi-turn potentiometer Interface Pins VCC

Laboratory & Testing - Precision equipment and measurement instruments

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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