| Chipset |
ESPRESSIF-ESP32 240MHz Xtensa® LX6 32-bit single / dual-core microprocessor |
| FLASH | 4MB QSPI / 8MB PSRAM Flash |
| SRAM | 520 kb SRAM |
| Button | Reset |
| USB to TTL | CP2104 |
| Modular interface | UART, SPI, SDIO, I2C, PWM, I2S, ADC |
| Edge clock | 40MHz crystal oscillator |
| Operating voltage | 2.7V-3.6V |
| Working current | About 70mA |
| Sleep current | About 1.1mA |
| SIM card | Only support Nano SIM card |
| Working temperature range | -40 ℃ ~ + 85 ℃ |
| Height and weight | 78.83mm * 28.92mm * 8.06mm (11.77g) |
| Power Specifications | |
| Food | USB 5V / 1A |
| Charging current | 500mA |
| Drums | 3.7V lithium battery |
| JST connector | 2Pin 2.0mm |
| Usb | Type-c |
| Wireless | |
| 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) |
| Transmission power | 22dBm |
| Communication distance | 300m |
| Bluetooth | |
| Protocol | Complies with bluetooth v4.2BR / EDR and BLE standard |
| Radio frequency | With sensitivity-97dBm receiver NZIF class-1, class-2 and class-3 AFH transmitter |
| Audio frequency | CVSD & SBC audio frequency |
| Software specifications | |
| Wi-Fi mode | Station / SoftAP / SoftAP + Station / P2P |
| Safety mechanism | WPA / WPA2 / WPA2-Enterprise / WPS |
| Encryption Type | AES / RSA / ECC / SHA |
| Firmware upgrade | UART / OTA download (via network / host to download and write firmware) |
| Software development | Support cloud server / SDK development for user firmware development |
| Network protocol | IPv4, IPv6, SSL, TCP / UDP / HTTP / FTP / MQTT |
| User configuration | AT + instruction set, cloud server, android / iOSapp |
| BONE | FreeRTOS |
T-call V1.4 size chart
