NRF24L01 Transmitter/Receiver Module Wireless

With this module we can two or more Arduinos be able to communicate with each other in a distant way, through a wireless network, it opens up many possibilities:

It allows to deal with remote sensors of temperature, pressure, alarms, etc...
Communicate with control and surveillance robbers from 10 to 50 meters away
Remote control and monitoring of nearby buildings and machinery.
Autonomous vehicles of all kinds
The NRF24L01 transceivers are a series of 2.4 GHz radio modules, which are based on the Nordic Semiconductor nRF24L01+ chip (Details). The Nordic nRF24L01+ integrates a full 2.4 GHz RF transceiver, an RF synthesizer and all baseband logic, including an Enhanced ShockBurst™ hardware protocol accelerator with a high-speed SPI interface for the application controller.

Characteristics:
Worldwide license-free 2.4 GHz ISM band operation
250kbps, 1mbps and 2Mbps on-air data-rate options
Enhanced ShockBurst™ hardware protocol accelerator
Ultra low power consumption – months to years of battery lifetime

Specifications:
Power supply : 1.9~3.6V
IO port working voltage : 0~3.3v / 5v
Transmitting rate : +7dB
Receiving sensitivity : ≤ -90dB
Transmission range: 50m indoors, 200m in open area
Dimension : 15x29mm