Development Board with GSM/GPRS Module and SIM Card Slot for Voice-Controlled Lithium Battery Charging Projects - DIY Electronics Kit for Smart Device Prototyping

[Full Network Connectivity] Innovatively integrates,, and gsm gprs functions in one device, eliminating the need for multiple devices for network access and data. [Easy Debugging] Type c interface with usb to serial chip cp210x allows direct connection to a computer for debugging and data, for beginners and professionals alike. [Enhanced User Experience] Features microphone input and sound output ports for voice control and feedback, enhancing usability and efficiency. [Long Battery Life] Equipped with a lithium battery charging circuit, ensuring uninterrupted usage even while charging, with overcharging and over-discharging for device safety.

[Multi-functional Sim Card Slot] Compatible with mobile, unicom 2g, 3g, 4g nanosim cards, providing voice, sms, and data communication options, ideal for emergency situations.
Spec: Item
Type: Development
BoardMaterial: PCB
Supply Voltage: DC 3.65V (TypeC Port 5V
Input) SIM Card Type: NanoSIM Card (not Included)
Network System: GSM, GPRS
850/900/1800/1900MHzFunctions: Support andSupport Voice, SMS and Data MessageTwo Sound
Ports On Board: Including Microphone Input and Sound Output PortOne IO 13pin Indicator Blue LED On BoardPackage List: 1 x Development Board2 x Pins1 x Aerial1 x Adapter1 x
Instruction ManualHow To Use: Install and use