Power supply: 2.2V to 3.6V
Operating voltage: 3.3V
Logic level: 3.3V
Mounting holes diameter: 2 holes, 3mm diameter
Integrated 802.11 BGN WiFi transceiver
Integrated dual-mode Bluetooth
4MB Flash Memory
Maximum serial baud rate: 256000bps
Dimensions: 50mm x 25mm (1.97in x 0.98in)