The SIM800L is a miniature cellular module that allows for GPRS transmission, sending/receiving SMS, and making/receiving voice calls. Its small footprint and low cost make it the go-to choice for GPS trackers, remote weather stations, and smart security systems. It operates on the 2G frequency bands, which remain widely available across Pakistan for M2M (Machine to Machine) communications
Key Features ✨
Global Connectivity: Supports Quad-band 850/900/1800/1900MHz, working on any 2G network in Pakistan (Jazz, Telenor, Zong, Ufone).
Compact Size: One of the smallest GSM modules available, perfect for wearable or space-constrained IoT devices.
Versatile Communication: Supports AT commands for full control over SMS, Calling, and GPRS data.
Micro SIM Slot: Uses a standard Micro SIM card for easy setup.
External Antenna Included: Comes with a spring antenna to ensure stable signal reception.
Technical Specifications ⚙️
| Feature | Specification |
| Operating Voltage | 3.4V to 4.4V (Important: See Pro-Tip) |
| Current Peak | 2.0 Amperes (during transmission bursts) |
| Logic Level | 3.3V to 5V (Level shifter recommended for 5V) |
| Communication | UART (Serial) |
| Baud Rate | 9600 to 115200 (Default is Auto-baud) |
| Dimensions | 25mm x 23mm |
| SIM Card Type | Micro SIM |
Popular Use Cases 🚀
Remote Alarms: Get an SMS notification when your home sensor is triggered.
Vehicle Tracking: Send GPS coordinates over the cellular network.
Remote Irrigation: Switch on your water pump via a simple missed call or SMS.
SMS Voting Systems: Build your own automated response bot.
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