Dominant Frequency: 240MHZ; Flash: 32M-Bits Processor: Tensilica LX6 Dual Core; Master chip: ESP32 LoRa chip: SX1276 SX1278; Support frequency band: 868-915MHZ/433MHz Open communication distance: 2.8KM; Computing capacity: up to 600DMIPS Dual-mode Bluetooth: traditional Bluetooth and BLE low-power Bluetooth; Development environment: perfect support for Operating voltage: 3.3-7V Operating temperature range: -40-90 ° Receiver sensitivity: -139dBm (SF12, 125KHZ) UDP continuous throughput: 135Mbps USB adapter chip: CP2102 Support mode: Sniffer, Station, softAP and Wi-Fi Direct Transmit power: 19.5dBm@11b, 16.5dBm@11g, 15.5dBm@11n Data rate: 150Mbps @ 11n HT40, 72Mbps @ 11n HT20, 54Mbps @ 11g, 11Mbps @ 11b Color: As Shown Material: PC+metal Package Contents: 2 x OLED Display Bluetooth WIFI Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.