Hardware specifications
1. Chipset: ESP32-WROVER-B, AXP192 power management chip
2. Flash: 4MB /16MB
3. Static SRAM: 8MB
4. SRAM: 520 kB SRAM
5. Button: PWR power switch, reset
6. USB to TTL: CP2104
7. Vehicle clock: 40MHz crystal oscillator
8. Peripheral equipment: SIM Nano card slot, Mini PCIE card slot
9. Antenna: Onboard antenna (default)
10. Working voltage: 2.7V to 3.6V
11. Sleep current: About 700ma
12. Operating temperature range: -40 degrees Celsius ~ + 85 degrees Celsius
13. Dimensions: 75 x 33 x 10.5 mm
14. Weight: 14.5g

Power Specifications
1. Power input: USB 5V / 1A
2. Charging current: 500 mA
3. Battery input: 3.7-4.2V
4. Charging IC: AXP192
5. JST connector: 2-pin 2.0mm
6. USB: Type C

wireless online
1. Standard: FCC / CE-RED / IC / TELEC / KCC / SRRC / NCC (ESP32 chip)
2. Protocol: 802.11 b/g/n (802.11n, speed up to 150Mbps) A-MPDU and A-MSDU aggregation, support 0.4uS guard interval
3. Frequency range: 2.4GHz-2.5GHz (2400M-2483.5M)
4. Transmit power: 22dBm
5. Communication distance: 300m

Bluetooth
1. Protocol: Compliant with Bluetooth v4.2BR/EDR and BLE standards
2. Radio frequency: NZIF receiver Class-1 with sensitivity of -97dBm, Class-2&Class-3 transmitter AFH
3. Audio: CVSD&SBC audio

Software specifications
1. Wi-Fi mode: Workstation / SoftAP / SoftAP + Station / P2P
2. Security mechanism: WPA / WPA2 / WPA2-Enterprise / WPS
3. Encryption method: AES / RSA / ECC / SHA
4. Firmware upgrade: UART download/OTA (download and write firmware via network/host)
5. Software development: support cloud server development / SDK for user firmware development
6. Network protocol: IPv4, IPv6, SSL, TCP, UDP, HTTP, FTP, MQTT
7. User configuration: AT + command set, cloud server, Android / iOS app
8. Operating system: FreeRTOS

SIM7600A suitable for North America:
1. LTE-FDD: B2/B4
2. UMTS/HSPA+: B2/B5

Packing list
1. SIM7600A-PCIE module x 1
2. LTE antenna x 1
3. GPS antenna x 1
4. Screw x 2