SX1278 LoRa Module Bluetooth MP3 Decoding Board Module with SD Card 3 cell Battery Holder for

3 cell Battery Holder for rechargeable 18650 Lithium-Ion Cells

photo reflective sensor emits a light beam (visible or infrared) from its light-emitting element

Simply put

To control a single module

SX1278 LoRa Module Bluetooth MP3 Decoding Board Module with SD Card 3 cell Battery Holder forIntroduction : Modulation Technology: LoRa Spread Spectrum RF Power Output: Constant at +20dBm (100mW) Sensitivity: Down to 148dBm Communication: Half duplex SPI Programmable Bit Rates: Up to 300kbps Modulation Modes Supported: FSK, GFSK, MSK, GMSK, LoRa and OOK RSSI Dynamic Range: 127dB Features: Automatic RF signal detection, CAD mode, high speed AFC Packet Engine: CRC up to 256 bytes