Feature:
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 touchsensor, 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 degC
Size: 40.27mm x 31.07mm x 8.13mm
| Wi-Fi | Description |
| Standard | FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC |
| 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 | Description |
| 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 | Description |
| 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 |
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.
2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase.
2. Please include your eBay ID and item number with any email requests.
3. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances.
3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
Il 10-lug-20 alle 03:20:08 CEST, il venditore ha aggiunto le seguenti informazioni sull'oggetto: