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4x4 Keypad Module

4X4 KEYPAD Pin Configuration 4X4 KEYPAD MODULES are available in different sizes and shapes. But they all have same pin configuration. It is easy to make 4X4 KEYPAD by arranging 16 buttons in matrix formation by yourself.

Electret Condenser Microphone

Pin Identification and Configuration: No: Pin Name Identification Description

Active Passive Buzzer

Buzzer Pin Configuration Pin Number Pin Name Description 1