The first NMMiner Lottery Board with ESP32-S3. support WiFi and BLE. Deeply optimazion for ESP32-S3: Achieves high performance of 120kH/s with a single chip in solo miner mode, while maintaining low power consumption. The NM-bot-chain is screenless lottery, so it consumption less than the Screen-With devices. The NM-bot-chain has no screen, but you can config it with your phone or the NMMiner official flash tool. Monitor its working status at any time through the NMController. Only one USB Power is enough for the all the NM-bot-chain Devices. The stronger the power supply of USB powered devices, the more NM-bot-chain devices they can support. Actually, the 5V-3A USB Power, almost can supply power to more than 10 devices. NOTE:USB Power cable not included Master Chip: ESP32-S3FN8 HashRate: 110-120kH/s Wi-Fi: 802.11 b/g, up to 150Mbps Device management: NMController Power Interface: Type-C USB/SH1.0 connector*2 Power supply range: 4-6V Memory: 384KB ROM; 512KB ; 8MB SPI Flash Intergrated Feature: WiFi 802.11b/g, BLE IO Interface: Type-C USB/12pin 2.54 Heade*2(15 IOs available ) Bluetooth: Bluetooth 5, BLE Display: 3*LEDs Hardware Resource: 2*ADC; 3*UART; 2*I2C; 4*SPI; etc Operating temperature: -20-70 Description: The devices can chained with the power interface one-by-one. The NM-bot-chain also can working with the ESP32-S3 sample programs and development tools from for and Platform.io, users can operate via Bluetooth, Wi-Fi. Main Features: No External computer is needed. The system supports secure connection if the pool supports it. By double-clicking the USER key, allows you to switch to a desktop clock mode with the BTC Lottery running in the background. Type:4Pcs Colour:Black Material:PCB Package Contents: 4 * NM-bot-chain Board 4 * cable 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.