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SPI Flash: Built-in 4M. WiFi:802.11b/g/n protocol, 2.4GhHz. Supports 2.4GHz Wi-Fi and Bluetooth Low Power 5.0, suitable for all kinds of IoT devices with wireless connection needs. Bluetooth:BT 5.0. BO0: download button, long press the BO0 key and then plug in the USB cable, release the hand can enter the “download mode”.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.