Item Type: Expansion board RF Chip: SX1262 Working Frequency Band: 850.125-930.125MHz Supporting Antenna: 868MHz antenna (2dBi) Air Rate: 0.3kbps-62.5kbps (programmable control) Transmit Power: 22.0 dBm (10 / 13 / 17 / 22 dBm programmable control) Receive Sensitivity: -147dBm (air rate 2.4kbps) Emission Current: 133mA (instantaneous power consumption) Receive Current: 11mA Sleep Current: 2μA (for LoRa module software is turned off) Communication Interface: UART (TTL level) Baud Rate Range: 1200bps-115200bps (default is 9600bps) Sub-package Length: 240Byte (32 / 64 / 128 / 240Byte programmable control) Cache Capacity: 1000Byte Supply Voltage: 5V Logic Level: 3.3V / 5V Application Scenarios: Smart home, industrial sensors, building automation, smart meter reading, other IoT applications Uses: Using SX1262, supporting 868MHz frequency band, it can transmit data through serial port with up to 5km communication distance. 1、 Adopting SX1262, supporting 868 MHz frequency band, this expansion board can transmit data through serial port, with up to 5km communication distance. 2、This expansion is equipped with a longer communication distance, faster rate, lower power consumption, better safety and anti-interference, supporting air wakeup, wireless configuration, carrier monitoring, communication keys, etc.<br> 3、 On-board CP2102 USB to UART chip is for easy serial port debugging.&nbsp;And it leads module UART control interface for easy access to main control boards, such as for&nbsp;Arduino&nbsp;/ STM32. 4、 With for LoRa spread spectrum technology, up to 81 channels are available. Meanwhile, communication distance is farther, and anti-interference ability is stronger. 5、 Support users to set their own communication key, and it can not be read, greatly improving the confidentiality of user data. Also, it supports RSSI signal strength indication for evaluating signal quality and improving communication networks. 1 x SX1262 868M for LoRa Expansion Board 1 x Screw Package 1 x Antenna 1 x USB Cable