SIM800L GSM Module for Arduino, ESP32, Raspberry Pi | Compoden
SIM800L GSM Module
The SIM800L is a compact quad-band GSM/GPRS module supporting 850/900/1800/1900 MHz bands. It enables SMS, voice calls, and GPRS data connectivity for microcontrollers like Arduino, ESP32, and Raspberry Pi. Ideal for IoT applications requiring cellular communication with low power footprint.
Key Specifications
| Specification | Value |
|---|---|
| Supported Bands | 850/900/1800/1900 MHz |
| GPRS Class | Class 12 |
| Communication | AT commands via UART |
| Supply Voltage | 3.4V - 4.4V (peak 2A) |
| SIM Card | Micro SIM |
| Dimensions | 24mm x 24mm x 3mm |
What You Can Build With This
- Remote SMS-controlled relay switch
- GPS tracker with voice feedback
- Weather station sending data via GPRS
- Vehicle anti-theft alert system
Compatibility
The SIM800L uses 3.3V logic but many breakout boards are 5V tolerant. It works with Arduino Uno/Mega (with 5V tolerance), ESP32, and Raspberry Pi (level-shift required). Requires a stable 4V supply capable of 2A peaks; we recommend a dedicated Li-Po battery or a 3.7Vā4.2V buck converter. Pair with a GPS module like NEO-6M for live tracking.
Wiring Notes
Connect VCC to a 3.7ā4.2V power source (not to Arduino 5V), GND to common ground, TX to RX of microcontroller, RX to TX. Use a 1kĪ© resistor on RX for 5V micros. Ensure antenna is connected before powering.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, the SIM800L can communicate with Arduino Uno using Serial (SoftwareSerial). Make sure to power the module with a separate 3.7ā4.2V supply as the Arduino 5V cannot provide the required peak current.
Does it support 4G/LTE networks?
No, the SIM800L only supports 2G GSM/GPRS networks. For 4G, consider SIM7600 modules.
What SIM card does it use?
It uses a standard Micro SIM. Ensure the SIM is unlocked and has active SMS and data plan. 2G network must be available in your area.
š¦ Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document ā step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this ā it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ā¹75 for orders up to ā¹999, FREE shipping above ā¹999
- COD Orders: ā¹125 shipping + ā¹50 COD fee = ā¹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items