Hardware Specifications

Chipset

ESPRESSIF-WROOM-32

Button

reset，boot

switch

BAT switch

dispaly

0.96 SSD1306

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

2.3V-3.6V

working current

about 60mA

sleep current

470uA

working temperature range

-40℃ ~ +85℃

Power Supply Specifications

Power Supply

USB 5V/1A

charging current

1000mA

battery

3.7V lithium battery

WIFI

Description

Standard

FCC/CE/TELEC/KCC/SRRC/NCC

protocol

802.11 b/g/n/e/i (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

Description

protocol

meet bluetooth v4.2BR/EDR and BLE standard

radio frequency

with -98dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH

audio frequency

CVSD&SBC audio frequency

Software specification

Description

wifi 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