4x4 matrix keyboard module - 16 independent input keys, suitable for microcontrollers and embedded development

• High Integration Design: 4 rows × 4 columns cross structure requires just 8 signal lines, perfectly suited for MCUs like STM32, Arduino, or 8051 series.
• Reliable Triggering: Each key uses a mechanical tactile switch with responsive actuation and long lifespan; software debouncing ensures no false triggers.
• Broad Compatibility: Directly connects to popular development boards without extra driver chips — easily integrate into password locks, industrial panels, smart meters, or educational kits.
• Flexible Programming Support: Includes standard scanning logic examples supporting both interrupt and polling modes — customize key mappings quickly.

We focus on three core product categories to meet diverse market demands:

1、Passive Components: We offer a comprehensive range of resistors, capacitors, inductors, and connectors, backed by stable stock and competitive pricing to support your continuous production needs.

2、Integrated Circuits (ICs) & Microcontrollers: Our portfolio features high-performance chips, including the ESP32 series, MCUs, and logic ICs. All components are sourced from authorized distributors to ensure guaranteed quality and authenticity.

3、PCB & PCBA Solutions: We provide complete supply chain support for printed circuit boards, ranging from prototype fabrication to mass production assembly, serving the IoT, consumer electronics, and industrial sectors.

4、Quality & Service Commitment
At Muren Technology, we prioritize authenticity and traceability. Every batch undergoes strict quality inspection with full lot traceability and customs declaration support. Whether you require samples, small-batch trials, or large-volume orders, our professional team ensures accurate delivery and long-term stable cooperation.