SPECIFICATIONS

Application: Computer

Brand Name: STJF

Choice: yes

Condition: New

Dissipation Power: 1

Functions: Electronic Module

High-concerned chemical: none

Origin: Mainland China

Range of application: Switch And Sensor For Arduino STM

Supply Voltage: 1

Type: Voltage Regulator

is_customized: Yes

semi_Choice: yes

Hardware Specifications
Chipset	ESPRESSIF-      -B 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
FLASH	QSPI flash 4MB / PSRAM  8MB
SRAM	520 kB SRAM
Button	reset
Power indicator lamp	red
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 30mA
Sleep current	10uA
Working temperature range	-40 ~ +85
Size&weight	40.27mm*31.07mm*8.13mm(6.42g)
Power Supply Specifications
Power Supply	USB 5V/1A
Charging current	500mA
Battery	3.7V lithium battery
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 0.4S 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/OTAThrough 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