Chipset

ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor

FLASH

QSPI flash 4MB / PSRAM  8MB

SRAM 

520 kB SRAM

Button

Reset

USB to TTL

CP2104

Modular interface

UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA  pre-amplifier

On-board clock

40MHz crystal oscillator 

Working voltage

2.7V-3.6V

Working current

About 70mA

Sleep current

About 300uA

SIM card

Only supports Nano SIM card

Working temperature range

-40℃ ~ +85℃

Size&Weight

78.83mm*28.92mm*8.06mm(11.77g)

Power Supply Specifications

Power Supply

USB 5V/1A

Charging current

500mA

Battery

3.7V lithium battery

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 to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval

Frequency range

2.4GHz~2.5GHz(2400M~2483.5M)

Transmit Power

22dBm

Communication distance

300m

Bluetooth

Protocol

meet bluetooth v4.2BR/EDR and BLE standard

Radio frequency

with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH

Audio frequency

CVSD&SBC audio frequency

Software specification

Wi-Fi Mode

Station/SoftAP/SoftAP+Station/P2P

Security mechanism

WPA/WPA2/WPA2-Enterprise/WPS

Encryption Type 

AES/RSA/ECC/SHA

Firmware upgrade

UART download/OTA（Through network/host to download and write firmware）

Software Development

Support 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/iOSapp

OS

FreeRTOS