Bluetooth Development Board for TTGO T-Call V1.3 ESP32 Wireless WiFi Bluetooth Communication Module Distance up to 300m

Specification: Hardware Specifications: Chipset: For ESPRESSIF-ESP32 240MHz Xtensa single-/dual-core 32-bit LX6 microprocessor Flash: For QSPI flash 4MB / PSRAM 8MB SRAM: 520 kB SRAM Button: Reset 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 70mA Sleep Current: Approx. 300uA SIM Card: Only supports Nano SIM card Working Temperature Range: -40?-+85? Power Supply Specifications: Power Supply: USB 5V/1A Charging Current: 500mA Battery: 3.7V lithium battery JST Connector: 2Pin 1.25mm/0.05inch USB: Type-C Wi-Fi Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC(For ESP32 chip) Protocol: 802.11 b/g/n (802.11n, speed up to 150Mbps) A-MPDU and A-MSDU polymerization, support 0.4?S Protection interval Frequency Range: 2.4GHz-2.5GHz (2400M-2483.5M) Transmit Power: 22dBm Communication Distance: Approx. 300m/984.25ft 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, for Android/iOSapp OS: For FreeRTOS Package List: 1 x Module 1 x Power Cable 2 x Pin 1 x FPC Antenna