NRF24L01+ 2.4GHz Wireless Transceiver Module

Pros: -Easy to interface with Arduino / allready have a library to use with Arduino. -Good range: about 10 meters inside walls. -Lot's of code examples. -Connection interface: SPI

Cons: -Connectors: you can't connect the board to a breadboard or to Arduino without modifing the connector, or using some kind of adapter. -You cannot (easly) change the board to connect and external antenna to extend the range.

Other: It's nice to use this in your DIY project. You can easily put your Arduino modules to communicate wireless.

Pros: Same design as suggested in chips datasheet, therefor working very well. Indoors range is around 10m as previous reviewer said, and outdoors range is over 50m, (that's how far i tested it only..) Board is really small 32x13mm. There are ready made libraries for Arduino (i tested with RF24 lib, but there is also one called Mirf)

Cons: Connector doesn't fit on breadboard, you need wires to connect or make adapter board. Not very easy to mod to use bigger antenna.

Other: If you need to move a lot of data back and forth, between some mcu-s you will need this. Very quick to get it working on Arduino thanks for ready made libraries. And price is also better than anywhere else.

Pros: The product is easy to use and has good documentation (datasheet) which is available on the WEB. The datasheet is available on the official Nordic Semiconductor website. Three are a lot of software examples there as well as other useful documents. It has connector and you do not need to sold it on the board.

Cons: Can not be supplied with 5V. Some other Wireless modules have additional direct channel that send UART signal but NRF24L01 does not have.

Other: I recommend it using with all microcontrolles.