The SIM800C GSM GPRS TTL Module is a compact quad-band 2G cellular module built on the SIMCom SIM800C chipset, covering GSM 850, 900, 1800, and 1900 MHz globally. The sim800c gsm gprs board includes an onboard micro SIM card slot, TTL serial interface at 3.3V logic, voice call, SMS, GPRS data, TCP/IP internet, and Bluetooth v3.0 with SPP and audio services. The module accepts 5V to 9V DC or a 3.7V lithium battery directly — making this gsm sim800c module with antenna the most power-flexible option in the SIM800 family for hobbyist Arduino and embedded MCU builds requiring cellular connectivity.
The sim800c gsm module datasheet, the SIM800C TTL serial interface outputs 3.3V logic levels — the module’s RX pin can be connected directly to a 3.3V MCU TX pin without modification, but a 5V Arduino TX line must go through a resistor voltage divider before reaching the module’s RX to prevent input over-voltage. The sim800c gsm module pinout exposes UART TX/RX, power key, status, and ring indicator pins on standard 2.54mm headers. The Bluetooth v3.0 on this sim800c gsm module supports Serial Port Profile (SPP) for wireless serial data and audio services for hands-free voice call applications. One practical trade-off: the micro SIM card slot is a push-push type — the SIM card must be removed and reinserted by fully pushing it in to eject, and aggressive handling damages the fragile micro SIM socket more readily than full-size SIM holders.
The non-obvious advantage of the SIM800C over the SIM800A and SIM900A in battery-powered IoT builds is the 3.7V LiPo direct supply input — the module runs directly from a single LiPo cell without a boost or buck converter, simplifying battery-powered tracker and sensor node designs. Available from StemVolt, this module is ideal for engineers building battery-friendly GSM IoT nodes and practical cellular embedded electronics projects.
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Checkout the SIM800A AE GSM GPRS Module With SMA Antenna
Features:
- Quad-band GSM 850 900 1800 1900 MHz global frequency coverage
- Bluetooth v3.0 SPP and audio services alongside GSM GPRS on one module
- 3.3V TTL serial interface connects directly to 3.3V MCU UART pins
- 3.7V LiPo or 5V-9V DC power suits battery portable IoT builds
- Onboard micro SIM card slot with status power key and ring indicator pins
Technical specifications:
 Applications:
- SIM800C GSM TTL Module used for Arduino GPRS SMS alert project
- College project uses sim800c gsm gprs board for LiPo GPS tracker build
- Portable IoT node uses sim800c gsm module for battery GPRS data upload
- Bluetooth hands-free uses gsm sim800c module with antenna for voice demo
- Wireless serial bridge uses sim800c gsm module for Bluetooth SPP link
Package includes:
- 1 x SIM800C GSM GPRS TTL Module
Piya Porwal –
Original product received
Nitin Lathi –
Delivered in 3 days
Anil Kumar –
SIM800C GSM GPRS TTL Module with Antenna provides reliable GSM communication and stable network connectivity for engineering projects, automation systems, and IoT applications
Sneha Gulati –
Happy with purchase
Rahul Chaudhary –
Bubble wrap packing kept the module safe during transit, and support responsive team provided helpful guidance for setup and usage.