The NRF24L01+ Module is an excellent wireless communication option between devices like the Arduino.

2.4 GHz 3dBi foldable antenna with reverse bias - SMA RF connector. Perfect for prototyping with RF ICs and Xbee modules. 50 ohm impedance. 10.16cm in length.

These wireless receivers work with our 434MHz transmitters. They can easily fit on a breadboard and work well with microcontrollers to create a very simple wireless data connection. Since these are just the receivers, they will only work one way data communication, you would need two pairs to act as a transmitter / receiver pair.

This is a fantastic find for SFE. A small, high-quality, quad-band, standard SMA terminated, cellular antenna.

infrared devices are widely used and often for remotely controlled devices . With this IR receiver, your Arduino project is now able to receive commands from any IR remote controller.

2.4GHz SMA - 3dBi antenna

3dBi GPS antenna SMA connector

Need range? The 2.4GHz Large Duck Antenna 5dBi with Reverse Polarized - SMA RF connector is perfect for you.

SparkFun RFM69 Breakout 915MHz

SparkFun Infrared Control Kit