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BLE

The low-power kind of Bluetooth used by sensors, wearables and phones.

Bluetooth Low Energy is a 2.4 GHz radio protocol designed for small, infrequent transfers at very low power, with advertising for discovery and connections for data exchange.

Examples

  • The ESP32-S3 and ESP32-C6 have Bluetooth Low Energy only; the original ESP32 also had Bluetooth Classic.

  • BLE splits 2402 to 2480 MHz into 40 channels; 37, 38 and 39 carry broadcasts.

See also

central peripheral channel
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