Built-in 40-pin GPIO interface, suitable for Raspberry series motherboards. Built-in CP2102 USB to UART chip, convenient for serial debugging. Export the module's UART control interface, which is convenient for connecting to main control boards such as /STM32. Built-in 4 LED indicators, easy to check the module's operating status. With LoRa spread spectrum technology, up to 81 channels are optional, the communication distance is long, and anti-interference is stronger. RF chip: SX1268. Working frequency band: 410.125 - 493.125MHz. Supporting antenna: 433MHz Antenna (2dBi). Air speed: 0.3kbps-62.5kbps (programmable control). Transmit power: 22.0dBm (10/13/17/22dBm programmable control). Receive sensitivity: -147dBm (air speed 2.4kbps). Module consumption. Emission current: 110mA (momentary consumption). Receive current: 11mA. Sleep current: 2uA (LoRa module software shutdown). Communication interface: UART (TTL level). Baud rate range: 1200bps- 115200bps (default is 9600bps). Packet length: 240 (32/64/128/240 programmable). Cache capacity: 1000. Measured distance: 5km (Test environment: clear and open, 2.5 above sea level, 5dBi antenna gain, 2.4kbps air speed). Supply voltage: 5V. Level: 3.3VI5V. Working temperature: -40-85Celsius. Color: blue. Material: PCB. Size: 65 x 30.5MM. Package contents: 1 x SX1268 433M LoRa HAT, 1 x USB type A male to male cable, 1 x 433MHz Antenna, 1 x Screw package. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3cm.