This wireless BLE sensor beacon from DFRobot can collect data from a digital or analog sensor and broadcast the value via BLE. Other devices with Bluetooth, such as a smartphone or microcontroller with Bluetooth (e.g. an ESP32) can then read out the value.
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Merge with the product from the cart?The main product of the kit has already been added to the cart. Merge with the product from the cart or add the kit to the cart?