The ESP32 is a low-cost, low-power system on a chip (SoC) microcontroller developed by Espressif Systems that includes Wi-Fi and Bluetooth wireless capabilities and dual-core or single-core processors. It is a successor to the ESP8266 microcontroller. The ESP32 series employs either a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations, Xtensa LX7 dual-core microprocessor, or a single-core RISC-V microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power-management modules. The ESP32 is highly integrated with in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules. It is capable of functioning reliably in industrial environments, with an operating temperature ranging from –40°C to +125°C. The ESP32 is engineered for mobile devices, wearable electronics, and IoT applications, and it achieves ultra-low power consumption through power-saving features including fine resolution clock gating, multiple power modes, and dynamic power scaling. The ESP32 is highly versatile and can be used in a variety of production systems. When looking for an ESP32 development board, it is important to consider aspects such as pin configuration, the number of pins, and the boards features.