PLEASE NOTE THAT THIS IS NOT WIFI.

This is a long distance 2.4G wireless module based on the nRF24L01+ chip with a built-in Pre-Amp and Low Noise Amplifier.  The module comes with an RP-SMA connector and small external antenna which can allow distances of up to 800meters  line of sight communication.  More directional antennas allow for longer distances.

Specifications:

• Voltage: 3-3.6V (recommended 3.3V) V
• Maximum output power: +20dBm
• Emission mode current(peak): 115mA
• Receive Mode Current(peak): 45mA
• Power-down mode current: 4.2uA
• Sensitivity 2Mbps mode in received: -92dBm
• Sensitivity 1Mbps mode in received: -95dBm
• Sensitivity 250kbps mode in received: -104dBm
• PA gain: 20dB
• LNA gain: 10dB
• LNA Noise figure: 2.6dBb 
• Antenna Gain (peak): 2dBi
• 2MB rate (Open area): 520m
• 1MB rate (Open area): 750m
• 250Kb rate (Open area): 1000m
• Size: 45.54mm * 16.46mm

Other Information:

Datasheet

Schematic

Arduino Playground

Tutorial