Key features: SX1276 chip based on ESP32 Wi-Fi, 868 915 MHz frequency, high sensitivity over -148 dBm, + 20 dBm output power, high reliability, long-transmission distance Onboard 32 MB flash Wi-Fi antenna, 0.96-inch blue OLED display, lithium battery charging circuit, CP2102 interface and USB serial chip, perfect support for development environment, can be used for program checking, product development is very easy and fast Specifications: Operating voltage: 3.3 7 V Operating temperature range: -40 to 90C (-40 to 194F) Support for Sniffer software protocol analysis, Station, SoftAP, and Wi-Fi Direct modes Data rates: 150 Mbps @ 11n HT40, 72 Mbps @ 11n HT20, 54 Mbps @ 11g, 11 Mbps @ 11b Transmit power: 19.5 dBm @ 11b, 16.5 dBm @ 11g, 15.5 dBm @ 11n Receiver sensitivity up to -98 dBm UDP sustained throughput: 135 Mbps Colour: Black Material: metal + PC Package Contents: 1*Bluetooth WIFI ESP-32 development board Module Reminders: 1) The 868/915 MHz antenna needs to be connected with the IPEX interface (if the antenna is not connected, it may damage the LoRa chip) 2) When the battery is full, the blue LED will stop working. 3) When using, pay attention to the positive and negative of the battery, otherwise it will be damaged. 4) With the IO port touchscreen touch signal input, you need to add the 100nF pull-down capacitor to this pin. 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 measurement allowed error is +/- 1-3cm.