If you've been working with the popular nRF24L01+ RF wireless data modules, and need to slim down the project size - then consider these mini versions from PMD Way. The entire module only measures 12 x 18mm, and uses castellated PCB contacts and 1.27mm pin spacing to save time. Specifications: 2Mbit/s 1Mbits 250Kbit/s transfer rate options No need for an external antenna + / - 60 ppm crystal 5V input tolerance level No need for external level converters Improved ShockBurst and serial interface can be easily connected with a variety of low-cost MCU No MCU with SPI Interface 20 pin 4x4mm QFN leadless package very few external components The 2Mbit/s rate when the peak current 12.5mA received The 2Mbit/s rate @ 0dBm output current of 11mA peak 2Mbit/s rate of only a small average current 400nA Power-down mode Power consumption of 32uA in standby mode 130us fast switching and wake-up time Operating voltage: 1.9~3.6V DC Sold in packs of ten. Don't forget to check out our full range of nRF gear if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.