Update information: V1.1 (From December, 2020).    Feature:  Hardware Specifications:  Interface: USB,SD Card, Solar Input interface;  Flash Memory: 4M Flash / 8M PSRAM;  Button: Reset,Power switch;  USB to TTL: CP2104 / CH9102F (optional);  Car Clock: 40HHz;  SIM Card Size: Nano SIM Card;  SIM Antenna Model: Full Band LTE Antenna 698-960 1710-2690MHz;  GPS Antenna Model: 1575R-AM;  Operating Temperature Range: -40~85 degrees;  Product Size: 111mm * 37mm * 20mm;  Product Weight: 40g;  Power: Specifications:  Working Voltage: 5v input;  Working Curent: 200mA;  Sleep Current: 1.2mA;  Charging Current: 780mA;  Battery Model: 18650;  Battery Holder Model: 18650 battery holder;  JST Connector: SOLAR;  USB: TYPE-C 3.0;  Wi-Fi:  Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC;  Protocol: 802.11 b/g/n (802.11n, speed up to 150Mbps) A-MPDU and A-MSDU polymerization, support 0.4us Protection interval;  Frequency: Range 2.4GHz〜2.5GHz (2400M〜2483.5M);  Transmit Power: 22dBm;  Communication distance: 300m;  Bluetooth:  Protocolmeet 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;  Seciirity Mechanism: WPA/WPA2/WPA2-Enterprise/WPS;  Encryption Type: AES/RSA/ECC/SHA;  Firmware Upgrade : UART download/OTA (Through network/host to download and 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;    Package includes:   1 x Wireless Communication Module;  2 x Pins;  1 x Ceramic antenna;  1 x LTE antenna;  1 x Battery cable