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    TTGO 915 MHz Shield ESP32 WiFi Bluetooth 18560 Battery Holder Solar Charge Module Development Board

    • Product Description Hardware Specifications:
    • Main chip: ESP32
    • Module: ESP32-WROVER-B,915 MHz Shield
    • Interface:USB,SD Card,Solar Input interface
    • Flash Memory: 4M Flash / 8M PSRAM
    • Button: Reset,Power switch
    • USB to TTL: CP2104
    • Car Clock: 40MHz
    £14.55
    £17.89
    Availability: In stock
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    Features
    • Product Description Hardware Specifications:
    • 1. Main chip: ESP32
    • 2. Module: ESP32-WROVER-B,915 MHz Shield
    • 3. Interface:USB,SD Card,Solar Input interface
    • 4. Flash Memory: 4M Flash / 8M PSRAM
    • 5. Button: Reset,Power switch
    • 6. USB to TTL: CP2104
    • 7. Car Clock: 40MHz
    • 8. SIM Card Size: Nano SIM Card
    • 9. SIM Antenna
    • 10. GPS Antenna
    • 11. Operating Temperature Range: -40-85 degrees
    • 12. Product Size: 111mm x 37mm x 20mm
    • 13. Product Weight: 50g
    • Power Specifications:
    • 1. Working Voltage: 5V input
    • 2. Solar input voltage range???4.4-6V
    • 3. Working Curent: About 200mA
    • 4. Charging Current: 780mA
    • 5. Battery Model: 18650
    • 6. Battery Holder Model: 18650 battery holder
    • 7. JST Connector: 2pin 2mm
    • 8. USB: TYPE-C 3.0
    • Wi-Fi:
    • 1. Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC
    • 2. Protocol: 802.11 b/g/n(802.11n???speed up to150Mbps)A-MPDU and A-MSDU polymerization???support 0.4??S Protection interval
    • 3. Frequency: range 2.4GHz~2.5GHz(2400M~2483.5M)
    • 4. Transmit Power: 22dBm
    • 5. Communication distance: 300m
    • Bluetooth:
    • 1. Protocol meet Bluetooth : v4.2BR/EDR and BLE standard
    • 2. Radio Frequency : with -97dBm sensitivity NZIF receiver Class-1, Class-2&Class-3 emitter AFH
    • 3. Audio Frequency : CVSD&SBC audio frequency
    • Software Specification:
    • 1. Wi-Fi Mode : Station/SoftAP/SoftAP+Station/P2P
    • 2. Security Mechanism : WPA/WPA2/WPA2-Enterprise/WPS
    • 3. Encryption Type : AES/RSA/ECC/SHA
    • 4. Firmware Upgrade :UART download/OTA???Through network/host to download and write firmware???
    • 5. Software Development : Support cloud server development /SDK for user firmware development
    • 6. Networking Protocol : IPV4, IPV6, SSL, TCP/UDP/HTTP/FTP/MQTT
    • 7. User Configuration : AT + Instruction set, cloud server, Android/iOS APP
    • 8. OS : FreeRTOS
    • Version update function:
    • 1. The battery positive and negative poles are connected to the wrong protection, overcharge and over discharge protection
    • 2. GPS power control, reduce power consumption, the lowest reaches 300uA when sleeping
    • 3. Replacement of ordinary charging IC with solar charging IC
    Packing List
    • TTGO 915 MHz Shield ESP32 WiFi Bluetooth 18560 Battery Holder Solar Charge Module Development Board
    • Original set and packaging
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