The SIM800L GPRS GSM Module - Quad-Band TTL Serial Port is a compact, cost-effective cellular communication board designed to add cellular connectivity to embedded projects.
The SIM800L GPRS GSM Module - Quad-Band TTL Serial Port is a compact, cost-effective cellular communication board designed to add cellular connectivity to embedded projects. Powered by SIMCom’s SIM800L core chip, it operates on standard quad-band GSM/GPRS frequencies (850/900/1800/1900 MHz), allowing seamless global network compatibility.
Equipped with a micro-SIM card holder and a TTL serial interface (TXD, RXD), the module accepts standard 3GPP AT commands directly from microcontrollers without requiring external logic converters. It supports sending/receiving SMS text messages, making and receiving voice calls, and connecting to the internet via GPRS data packets (TCP/IP, HTTP, FTP). An onboard status LED supplies visual diagnostic feedback—blinking rapidly when searching for a network and slowly when registered.
The board operates within a tight supply voltage window of 3.7V to 4.2V DC (optimal 4.0V, such as a single-cell LiPo battery or high-current LDO) and requires up to 2A peak current capability during radio burst transmissions. It includes an IPX connector for spring/PCB antennas and is fully compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and STM32.
| Core Controller IC | SIMCom SIM800L Quad-Band Cellular Engine |
|---|---|
| Cellular Frequencies | Quad-Band (850 / 900 / 1800 / 1900 MHz) |
| Operating Voltage | 3.7V to 4.2V DC (3.8V - 4.0V recommended) |
| Peak Current Draw | Up to 2A during cellular transmission bursts |
| SIM Card Interface | Onboard push-pull Micro-SIM card socket |
| Serial Communication | UART TTL interface (1200 bps to 115200 bps with auto-baud) |
| Control Method | Standard 3GPP AT Commands & SIMCom enhanced AT commands |
| Audio Support | Differential microphone (MICP, MICN) and speaker (SPKP, SPKN) pins |
| Antenna Options | Onboard IPX connector for spring or external PCB patch antenna |
| Status Indicator | Onboard LED showing network search and registration status |
What is the operating voltage?
3.7V to 4.2V DC (3.8V - 4.0V recommended).
Which interface does it use?
Onboard push-pull Micro-SIM card socket.
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, ESP8266, Raspberry Pi projects.
Can I buy the SIM800L GPRS GSM Module - Quad-Band TTL Serial Port in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
