- Hardware Specifications:
- Chipset: ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
- FLASH Memory: QSPI flash 4MB / PSRAM 8MB
- SRAM: 520 KB SRAM / PSRAM 8MB
- Button: Reset
- USB to TTL IC: CP2104
- Modular interface: UAR, 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: About 300uA
- SIM card: Only supports Nano SIM card
- Working temperature range: -40℃ ~ +85℃
- Size&Weight: 75.15×30.64×10.70mm (14.5g)
- Power Supply Specifications:
- Power Supply: USB 5V/1A
- Charging current: The charging current is programmable and self-adjustable (default 500mA)
- Battery: 3.7V lithium battery (Not included)
- JST Connector: 2Pin 2.0mm
- USB: Type-C
- Wi-Fi:
- 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
- GSM/GPRS SIM800L:
- Quad-band 850/900/1800/1900MHz
- Connect onto any global GSM network with any 2G SIM
- Send and receive SMS messages.
- Send and receive GPRS data (TCP/IP, HTTP, etc.)
- AT command interface with “auto baud” detection.
- Bluetooth:
- Protocol: Bluetooth v4.2BR/EDR and BLE standard
- Radio frequency: -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/iOSapp
- OS: FreeRTOS
