Using ESP32 chip. 32-bit dual-core, 240MHz frequency. Integrated WiFi and Bluetooth The main processor is completely free to run user applications. An additional ULP coprocessor is used to monitor GPIO, ADC channels, and control most internal peripherals. Use 's SX1276 chip. Support 868MHz, 915MHz dual frequency. Can be used as both a LoRa node and a micro gateway Support LoRaWAN protocol. Node transmission distance: open up to 6KM. Output power: up to +20dBm (2dBm) Note: This item comes unassembled, soldering of headers is required. Lithium battery is not included. wireless online 802.11 b/g/e/i 802 802.11 n (2.4GHz), to 150Mbps 802 802.11 e: Realize the mechanism of wireless multimedia technology WMM-PS, UAPSD MPDU and A-MSDU frame aggregation technology Block recovery, fragmentation and reorganization Beacon automatic monitoring/scanning 802 802.11 i security features: pre-authentication and TSN Support WPA/WPA2/WPA2-Enterprise/WPS encryption Infrastructure Station Mode / SoftAP Mode Wi-Fi Direct (P2P), P2P , P2P GO mode and P2P power management Support IPv6 Bluetooth Bluetooth v4.2 complete standard, including traditional Bluetooth (BR/) And Bluetooth Low Energy (BLE) Support standard Class-1, Class-2, Class-3 without external power amplifier Enhanced precision power control Output power up to +10 dBm NZIF receiver, BLE receiving sensitivity is -128 dBm Adaptive Frequency Hopping () Standard HCI based on SDIO/SPI/UART interface High-speed UART HCI up to 4 Mbps Support BT 4.2 controller and host protocol stack Service Protocol () Generic Access Application (GAP) Safety Management Protocol () Bluetooth Low Energy ATT / General eement on Tariffs and Trade size: 60x23x8mm Material:PCB+metal colour:Black Package Contents: 1 x esp32 lora development board(Unsoldered) 1 x 868-915mHz Antenna 1 x Pin sticker 2 x Pin headers 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.