- Chipset: ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
- FLASH: QSPI flash 4MB
- SRAM: 520 kB SRAM
- Button: Reset
- USB to TTL: CP2104
- Modular interface: UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、ADC、capacitor touch sensor、DACLNA pre-amplifier
- Display: IPS ST7789V 1.14 Inch
- Working voltage: 2.7V-4.2V
- Working current: About 67MA
- Sleep current: About 350uA
- Working 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
- 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/iOS app
- OS: FreeRTOS

We keep a close eye on consumer needs,offering continual innovation and product development and an ever-changing core product range.Each product undergoes rigorous development and testing,keeping quality and longevity in mind.In addition,our trained customer service team work hard to ensure that any queries are dealt with efficiently and strive to ensure that you are always provided with the highest level of customer support.

Any questions,please contact us through eBay message or e-mail,We will reply within 1-2 business days(public holidays not included).
Working time:Monday-Friday 9:00 AM-5:30PM(Beijing)

A complete and correct shipping address is essential.
Customers with shipping addresses outside of the U.S.are responsible for all duties and import taxes.Please contact your customs for information.
For any further information about shipping,please contact our customer service team.

We are happy to be able to offer our customers 60 day returns on our products.All items can be returned and a refund will be issued,provided they are returned within 60 days of receipt of purchase.In the unlikely event that you are not happy with your purchase please do not hesitate to contact our customer services team.

We offer at least 1 year guarantee on all of our products.