Jack 3.5mm Stereo Male Plug.

This Voice Recognition Module with Microphone for Arduino can recognize up to 15 voice instructions and be suitable for most cases involving voice control. With this module, we can control cars or other electrical devices by voice.

The purpose of this sensor is to measure the sound intensity of the surrounding environment.

Industrial Bell with 150mm 220V.

A small Audio Speaker that is ideal for radio and amplifier projects.

The Module KA2284 is a Battery, Power and Audio Level Indicator.

The Arduino WTV020-SD MP3 Module is a voice recording module with 1GB SD Card storage capacity. You can upload WAV and AD4 format files that conform to FAT formatting. It supports 6KHz to 32KHz, being 36KHz for AD4 files and 6-16KHz for voice sampling rate (Audio Sampling).