Technical Specifications

• Chipset: ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
• FLASH: QSPI flash 4MB
• SRAM: 520 kB
• Button: Reset
• USB: TTL CP2104
• Unique Interfaces: UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IR, GPIO, ADC, capacitive touch sensor, DAC, LNA pre-amplifier
• Display: IPS ST7789V 1.14 Inches
• Operating Capacity Range: 2.7V - 4.2V
• Operating Current: About 67mA
• Sleep Current: About 350μA
• Operating Temperature Range: -40℃ ~ +85℃
• Size & Weight: 51.52*25.04*8.54mm (7.81g)

Power Supply Specifications

• Power Supply: USB 5V/1A
• Charging Current: 500mA
• Battery: 3.7V lithium battery
• Connector: JST Connector 2Pin 1.25mm
• USB: Type-C

Wi-Fi

• Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC (esp32 chip)
• Protocol: 802.11 b/g/n (802.11n, speed up to 150Mbps)
• Security Assurance: A-MPDU and A-MSDU, supports 0.4μS Guard Interval
• Frequency Range: 2.4GHz~2.5GHz (2400M~2483.5M)
• Transmit Power: 22dBm
• Communication Distance: 300m

Bluetooth

• Protocol: Compatible with bluetooth v4.2 BR/EDR and BLE standard
• Radio Frequency: With sensitivity -97dBm, NZIF receiver Class-1, Class-2 & Class-3 transmitter
• Audio Frequency: CVSD & SBC

Software

• Wi-Fi Operation: Station/SoftAP/SoftAP+Station/P2P
• Security Mechanism: WPA/WPA2/WPA2-Enterprise/WPS
• Encryption Type: AES/RSA/ECC/SHA
• Firmware Upgrade: UART download/OTA (via network/host for firmware download and write)
• Software Development: Support for cloud server development/SDK for user firmware development
• Networking Protocol: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
• User Configuration: AT + Instruction set, cloud server, android/iOS app
• Operating System: FreeRTOS