TTGO T-Internet-POE ESP3 Module Downloader Extension Board, Downloader Board

Hardware specifications.
1. Chipset: Espressif-ESP32-SCROOM, LAN8720A Ethernet chip, SI 3404 power management chip
2. Flash: 4 MB
3. RAM: 8 MB
4. SRAM: 520 KB SRAM
5. Button: robot, rest
6. External device: TF card slot, Type-C interface, PA2369NL 1825-S transformer, HR861153C Ethernet-Poe interface
7. USB to TTL: CP 2104
8. Modular interface: SD card, UART, SPI, I2C, PWM, I2S, ADC
9. Satellite clock: 32.768 MHz crystal oscillator
10. Operating temperature range: -40 degrees Celsius to +85 degrees Celsius
11. Dimensions: 70x52.3x17mm
12. Weight: 26.85 g

Power Specifications
1. Power input: USB Type-C 5V
2. HR861153C Ethernet-Poe Ethernet interface: 50V
3. Working voltage: 2.7V-3.6V
4. Output current: about 1.2a
5. Charging current: 500mA
6. USB: USB Type-C

Wifi
1. Standard: FCC / CE-RED / IC / TELEC / KCC / SRRC / NCC (ESP 32 chips)
2. Protocol: 802.11 B/G/N (802.11n, 150Mbps acceleration) A-MPDU and A-MSDU Aggregation, support 0.4? protection interval
3. Frequency range: 2.4Ghz~2.5GHz (2400m~2483.5m)
4. Transmit Power: 22 dBm
5. Communication distance: 300 meters

Bluetooth
1. Protocol: Complies with Bluetooth V4.2BR/EDR and BLE standards
2. Radio frequency: -97 DBM Sensitivity NZIF Receiver Class-1 Class-2 Class-3 Emitter AFH AFH
3. Audio: CVSD & SBC Audio

Software Specifications
1. Wi-Fi Mode: Workstation / SoftAp / SoftAp + Station / P2P
2. Security mechanism: WPA / WPA 2 / WPA 2-Enterprise / WPS
3. Encryption type: AES / RSA / ECC / SHA
4. Firmware Update: Download UART/OTA (Download and write firmware via network/host)
5. Software development: Support cloud server development / SDK for user firmware development
6. Network Protocol: IPV 4, IPV 6, SSL, TCP/UDP/HTTP/FTP/MQTT
7. User configuration: + instruction set, cloud server, Android / Iosapp
8. OS: Freertos