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On-board ESP32 chip ESP32-PICO-D4, Flash size of 4MB. Receiver&Transmitter. WIFI protocol. Bluetooth protocol: Bluetooth V4.2 BR/EDR and BLE standards. Adapter Module. Step up module. Step down module.
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.