This DTMF Shield is a Dual-tone multi-frequency signaling module decoder for Arduino With it's audio connector you can decode the crazy funny noises common phones make.

This small digital distance sensor detects objects between 2 cm and 10 cm apart. With its fast response time, small size and low current consumption , this sensor is a good choice for detecting non-contact objects in compact PCBs facilitating integration into your project.

Play your .mp3 files stored by USB or SD card. For Use (12V): Place a 68Ohm/1W Resistor in series with the (+) of the Power Supply, to avoid excessive dissipation.

The Grove - Speaker is a module consisting of power amplification and voice outputs. The volume can be adjusted by the integrated potentiometer . With input frequencies at different, the speaker generates different tones. Encoding the music in Arduino, make your own music box yourself!

The Vma449 integrates the Voice Recorder ISD1820 and Playback CI to record a single message up to 20 seconds long. The recorded message is stored in the analog flash memory that keeps the message stored even in the event of a power failure. The module has an integrated microphone to record your message and buttons for recording, partial playback or full reproduction of the message functions.

The CNY70 has a compact construction where the emitter and receiver are arranged in the same direction to detect the presence of an object using the object's reflective IR beam.

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

This UV Sensor is capable of detecting UV solar radiation using a simple UVM-30A chip. It can be easily configured for projects with Arduino to monitor UV Index, analyze UV-A lamps or DIY projects as plant growth analysis.

The 5-Channel Infrared Detector Sensor Module is designed to optimize robotics and electronics projects.

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

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

This is the Infrared Proximity Sensor made by Sharp.