USB to GSM Serial GPRS SIM800C Module with Bluetooth Computer Control Calling with Glue Stick Antenna
USB to GSM Serial GPRS SIM800C Module with Bluetooth Computer Control Calling with Glue Stick Antenna
USB to GSM Serial GPRS SIM800C Module with Bluetooth Computer Control Calling with Glue Stick Antenna
The USB to GSM Serial GPRS SIM800C Module is a compact quad-band GSM/GPRS communication module that integrates voice calling, SMS, and data transmission capabilities with dual connectivity options through USB and Bluetooth interfaces. This module is extensively used by embedded systems engineers, IoT developers, and telecommunications professionals who require reliable cellular communication in remote monitoring systems, GPS tracking devices, and industrial automation projects. It solves the critical challenge of establishing wireless voice and data connectivity in applications where traditional internet infrastructure is unavailable or unreliable, enabling real-time communication and remote device control through standard computer interfaces.
Product Overview
The SIM800C module operates on quad-band GSM frequencies (850/900/1800/1900 MHz), providing global cellular coverage compatibility. The module features a built-in TCP/IP stack for GPRS data transmission at speeds up to 85.6 kbps, making it suitable for IoT applications requiring moderate bandwidth. The dual interface design allows users to communicate with the module via USB serial connection for direct computer control or through Bluetooth wireless connectivity for untethered operation. The integrated glue stick antenna provides omnidirectional radiation pattern with adequate gain for indoor and outdoor deployments, while the compact form factor allows seamless integration into existing PCB designs or standalone applications.
This module distinguishes itself through its combination of voice-grade audio quality, support for AT command protocol compatibility, and the flexibility of dual connectivity options. The SIM800C chipset includes integrated power management with wide input voltage tolerance (5V USB or 3.7-4.2V battery), making it adaptable to various power supply configurations. The Bluetooth interface operates in classic Bluetooth 2.1 mode, supporting SPP (Serial Port Profile) for transparent serial communication, while the USB interface provides simultaneous charging and data transmission capabilities. The glue stick antenna design eliminates the need for external RF connectors, reducing assembly complexity and improving mechanical reliability in field deployments.
Key Specifications
| Specification | Details |
| Product Type | USB to GSM Serial GPRS SIM800C Module with Bluetooth |
| Brand | SIM800C Original |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| GSM Bands | Quad-band 850/900/1800/1900 MHz |
| GPRS Speed | Up to 85.6 kbps download, 42.8 kbps upload |
| Connectivity | USB 2.0 and Bluetooth 2.1 Classic |
| Power Supply | 5V USB or 3.7-4.2V battery input |
| Antenna Type | Integrated glue stick antenna with omnidirectional pattern |
Key Features
- Quad-band GSM/GPRS module supporting 850/900/1800/1900 MHz frequencies for worldwide cellular network compatibility and seamless roaming across different regions
- Dual connectivity interface with USB 2.0 serial connection for wired computer control and Bluetooth 2.1 Classic for wireless operation up to 10 meters range
- Full voice calling capability with built-in audio codec supporting 8 kHz sampling rate, enabling real-time voice communication and audio alert applications
- Integrated TCP/IP stack for GPRS data transmission enabling IoT applications, remote monitoring, and cloud connectivity without external processing requirements
- Glue stick antenna design providing omnidirectional coverage with 2-3 dBi gain, eliminating external connector requirements and improving mechanical robustness
- AT command protocol support enabling easy integration with microcontrollers, single-board computers, and custom firmware development
Applications and Use Cases
- Remote GPS tracking systems where the module transmits location data via GPRS to cloud servers while supporting voice alerts for emergency notifications in vehicle fleet management and asset tracking applications
- Industrial IoT sensor networks requiring periodic data transmission and remote device control through SMS or voice commands in manufacturing facilities, agricultural monitoring, and environmental sensing
- Backup communication systems for alarm panels and security systems that require cellular connectivity independent of broadband internet in residential and commercial installations
- Embedded telemetry systems in weather stations, water quality monitors, and utility meters that collect sensor data and transmit via GPRS while supporting voice notifications for critical threshold breaches
- Home automation and smart device control applications where Bluetooth connectivity enables wireless smartphone control while GPRS provides remote access from anywhere through internet connectivity
How to Use
To establish USB connectivity, connect the module to your computer using a standard USB Type-B cable. The module will enumerate as a virtual COM port (typically COM3-COM10 on Windows or /dev/ttyUSB0 on Linux). Install appropriate USB drivers if required, then open a serial terminal application (PuTTY, Hyperterminal, or Arduino IDE) configured for 115200 baud rate, 8 data bits, 1 stop bit, and no parity. Insert a 2G/3G GSM SIM card into the module's SIM slot, ensuring the card is fully seated until it clicks. Send AT commands to test connectivity: AT (should return OK), AT+CPIN? (checks SIM status), and AT+CREG? (checks network registration). For Bluetooth operation, pair the module with your computer or smartphone using the default PIN (typically 1234 or 0000), then establish an SPP connection which provides transparent serial communication identical to USB mode.
For voice calling functionality, use AT+ATD command followed by the phone number (e.g., AT+ATD1234567890; initiates a call). Monitor call status using AT+CLCC command. For SMS transmission, use AT+CMGF=1 to set text mode, then AT+CMGS="+1234567890" followed by your message text and Ctrl+Z to send. For GPRS data transmission, configure the APN settings using AT+SAPBR commands specific to your mobile operator, then establish TCP connections using AT+HTTPINIT and AT+HTTPPARA commands. Always ensure proper antenna placement away from metallic surfaces for optimal signal reception, and maintain adequate power supply (minimum 2A capacity) to prevent voltage drops during transmission peaks which can cause module resets.
Frequently Asked Questions
What is the difference between SIM800C and other SIM800 variants?
The SIM800C is specifically optimized for single SIM card operation with integrated Bluetooth capability, making it ideal for portable and wireless applications. Unlike SIM800L which requires external power management, the SIM800C includes integrated power management supporting both USB and battery inputs. The C variant also features improved audio quality and lower power consumption in idle mode, making it more suitable for battery-powered IoT devices while maintaining full quad-band GSM compatibility.
Can this module work simultaneously on USB and Bluetooth connections?
Yes, the module supports simultaneous USB and Bluetooth connectivity. You can maintain an active USB serial connection to your computer while also paired with a smartphone via Bluetooth. However, serial commands sent through either interface will be processed sequentially, so rapid command switching between interfaces may require appropriate buffering and timing delays in your application code to ensure reliable command execution and response handling.
What SIM cards are compatible with this module?
The SIM800C module supports standard 2G/3G GSM SIM cards from any mobile operator. It is NOT compatible with 4G LTE-only SIM cards or eSIM technology. Ensure your SIM card has active 2G/3G services enabled with your operator, as some regions are phasing out 2G networks. The module requires a micro-SIM form factor (15mm x 12mm), and you can use a standard SIM card with an appropriate adapter if needed. Verify your operator's GSM band support matches the module's quad-band capability for optimal coverage.
What is the maximum range for Bluetooth connectivity?
The Bluetooth 2.1 Classic interface provides a typical range of 10 meters in open space with line-of-sight conditions. In indoor environments with obstacles like walls and furniture, the practical range reduces to 5-7 meters. The range depends on antenna orientation, environmental interference from other 2.4 GHz devices (WiFi, microwave ovens), and the receiving device's Bluetooth receiver sensitivity. For extended range applications, consider using external Bluetooth amplifiers or mesh networking approaches with multiple modules.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Returns: 7-day return policy on manufacturing defects only
Buy USB to GSM Serial GPRS SIM800C Module with Bluetooth Computer Control Calling with Glue Stick Antenna Online in India
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