The ESP32-MINI-1 is a versatile Wi-Fi + Bluetooth + Bluetooth LE MCU module with powerful features and a wide range of peripheral interfaces, suitable for various IoT application scenarios such as smart homes, smart buildings, consumer electronics, and industrial control. The module is designed to be compact and small in size, making it especially ideal for applications with limited space, such as light bulbs, switches, and sockets. The module comes in two variants: 85°C version 105°C version Both variants feature a PCB onboard antenna and are equipped with a 4MB SPI flash. The information provided in this document applies to both types of modules. Features MCU Built-in ESP32-U4WDH chip, Xtensa single-core 32-bit LX6 microprocessor, supporting clock frequencies up to 160 MHz 448 KB ROM 520 KB SRAM 16 KB RTC SRAM Wi-Fi Supports 802.11b/g/n 802.11n data rate up to 150 Mbps Supports A-MPDU and A-MSDU aggregation Supports 0.4μs guard interval Operating channel center frequency range: 2412~2484 MHz Bluetooth Bluetooth® V4.2 BR/EDR and Bluetooth® LE standards Class-1, Class-2, and Class-3 transmitters CVSD and SBC AFH Hardware Module interfaces: SD card, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, Two-Wire Automotive Interface (TWAI™, ISO11898-1 compliant) 40 MHz crystal oscillator 4 MB SPI flash Operating voltage/power supply voltage: 3.0~3.6V Recommended operating temperature range: 85°C version: -40~85°C 105°C version: -40~105°C Module dimensions: (13.2 x 19.0 x 2.4) mm Certifications Environmental certifications: REACH/RoHS ESP32-MINI-1/1U Module Comparison Module Order Model Number Internal Chip Flash PSRAM Antenna Dimensions (mm) ESP32-MINI-1 (85°C version) ESP32-MINI-1-N4 ESP32-U4WDH 4 MB — PCB onboard antenna 13.2 × 19.0 × 2.4 ESP32-MINI-1 (105°C version) ESP32-MINI-1-H4 ESP32-U4WDH 4 MB — PCB onboard antenna 13.2 × 19.0 × 2.4 ESP32-MINI-1U (85°C version) ESP32-MINI-1U-N4 ESP32-U4WDH 4 MB — IPEX external antenna connector 13.2 × 13.5 × 2.4 ESP32-MINI-1U (105°C version) ESP32-MINI-1U-H4 ESP32-U4WDH 4 MB — IPEX external antenna connector 13.2 × 13.5 × 2.4 Applications General low-power IoT sensor hub Smart buildings General low-power IoT data logger Industrial automation Camera video streaming Smart agriculture OTT TV Box/set-top box devices Audio equipment Voice recognition Health/medical/caregiving Image recognition Wi-Fi toys Mesh networks Wearable electronics Home automation Retail & Catering
