ESP32 is integrated with antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module. The complete solution occupies minimal printed circuit board area. This board features a 2.4 GHz dual-mode Wi-Fi and Bluetooth chip built on TSMC 40nm low-power technology, offering excellent power efficiency and RF performance, making it safe, reliable, and suitable for a wide range of applications. Features: - Built-in indicator LED (Green indicates fully charged, Red indicates charging) - Supports simultaneous charging and operation - One switch controls power; one additional programmable LED connected to GPIO16 - 0.5A charging current, 1A output; all ESP32 pins are broken out - Includes overcharge and over-discharge protection - Compact size for easy integration into various products - Supports LWIP protocol and FreeRTOS - Operates in three modes: AP, STA, and AP+STA - Compatible with Lua programming for simplified development Specification: - Model: ESP32 - Battery: 18650 Battery (not included) - Charging Current: 0.5A - Output Current: 1A - Dimensions: 90 x 30mm / 3.5 x 1.2 inches - Weight: Approx. 26g / 0.9oz Package List: - 1 x ESP32 Board (18650 Battery not included)