The Wio‑Core is an ESP‑WROOM‑02 Wi‑Fi IoT module preloaded with Wio platform firmware, making it fully compatible with Wio Link and Wio Node hardware/software. It integrates TCP/IP stacks, multiple peripheral interfaces, and advanced power management for ultra‑low power operation. Its compact footprint (18 × 20 mm) makes it ideal for wearables, mobile devices, and embedded IoT applications. Description The MCU module is the brain of any IoT board. To simplify IoT development, Seeed introduced Wio Link and later Wio Node, both based on the popular ESP8266 SoC. The Wio‑Core builds on ESP‑WROOM‑02, replacing the original firmware with Wio platform firmware. This ensures full compatibility with Wio Link and Wio Node, while offering cloud integration and OTA updates. Certified (FCC, CE, KCC, TELEC, LCIE, IC), the Wio‑Core delivers reliable Wi‑Fi connectivity and ultra‑low power consumption, making it one of the best solutions for wearables, mobile devices, and IoT applications. Key Features ESP8266 embedded (FCC, CE, KCC, TELEC, LCIE, IC certified) Wio Link and Wio Node compatible Integrated TCP/IP stacks, 10‑bit ADC, HSPI/UART/PWM/I2C/I2S interfaces Ultra‑compact size (18 × 20 mm) for space‑sensitive designs Advanced power management for ultra‑low power operation Specifications Certificates: FCC / CE / TELEC / RoHS Wi‑Fi protocols: 802.11 b/g/n Frequency range: 2.4–2.5 GHz Operating voltage: 3.0–3.6V Average operating current: 80 mA Operating temperature: -40°C to 125°C Package size: 18 × 20 × 3 mm Flash memory: 4 MB Firmware: Wio Firmware with OTA capability User interface: Cloud server, Android/iOS App Documents Libraries and documentation: Wiki Technical discussion: Forum Community projects: Recipe platform Certification HSCODE 8517709000 USHSCODE 8517620090 UPC 841454118695 EUHSCODE 8517180000 COO China Technical Details Dimensions 50 × 80 × 4.5 mm Weight 3 g Battery Excluded Part List Wio‑Core 1 Application Scenarios Wearable devices Mobile devices Smart home IoT nodes Cloud‑connected sensors Low‑power embedded systems FAQ 1. How is Wio‑Core different from ESP‑WROOM‑02? It is hardware‑equivalent but comes with Wio firmware, ensuring compatibility with Wio Link/Node and cloud services. 2. Does it support OTA updates? Yes, via the Wio platform firmware. 3. What certifications does it have? It is FCC, CE, TELEC, KCC, LCIE, IC certified, suitable for global deployment. 4. Is it suitable for battery‑powered devices? Yes. With advanced sleep modes, it achieves extremely low power consumption. 5. What interfaces are available? HSPI, UART, PWM, I²C, I²S, and a 10‑bit ADC.
