Smallest SIM800L GSM/GPRS Module Micro Sim Card
Smallest SIM800L GSM/GPRS Module Micro Sim Card
Smallest SIM800L GSM/GPRS Module Micro Sim Card
Smallest SIM800L GSM/GPRS Module Micro Sim Card
Smallest SIM800L GSM/GPRS Module Micro Sim Card
Smallest SIM800L GSM/GPRS Module Micro Sim Card

Smallest SIM800L GSM/GPRS Module Micro Sim Card

Arduino Modules
ARD663
Part.No: SIM800L
€8.90
Last items in stock
Immediate Dispatch
SIM800L GSM/GPRS module with Micro SIM card slot, quad-band global support, and TTL serial interface. Compact 2.5×2.3 cm design, 3.7–4.2 V supply, ideal for IoT SMS and GPRS projects with Arduino or any microcontroller.

 

The SIM800L (MPN: SIM800L) is one of the smallest GSM/GPRS modules available, enabling any microcontroller project to send SMS messages, make voice calls, and exchange data over a GPRS connection using a standard Micro SIM card. GSM (Global System for Mobile Communications) is the worldwide standard for mobile communication, and the SIM800L gives your maker or IoT project direct access to that network in a footprint barely larger than a postage stamp.

Key Features

  • Chip: SIM800L → proven, widely-supported GSM/GPRS chipset with extensive AT-command documentation
  • Supply Voltage: 3.7 – 4.2 V → matches a single Li-Po/Li-Ion cell directly; no buck converter needed when powering from a battery
  • Quad-Band Network Support: 850 / 900 / 1800 / 1900 MHz → works in virtually every country worldwide, including Cyprus, Greece, and the rest of Europe
  • Ultra-Compact Size: 2.5 cm × 2.3 cm → fits in tight enclosures and wearable builds
  • TTL Serial Interface: communicates via standard UART TX/RX → connects directly to any microcontroller UART pin; no MAX232 level-shifter required
  • Auto Power-On & Network Registration: the module boots and searches for a network automatically on power-up, simplifying firmware
  • Onboard Signal LED: slow blink = network found; fast blink = searching for signal → instant visual feedback without extra code

Compatibility

  • Arduino UNO / Nano (5 V logic): use a voltage divider or logic-level shifter on the TX line from Arduino to the SIM800L RX pin, since the module operates at 3.7–4.2 V supply and its UART is not 5 V tolerant
  • ESP32 / ESP8266 (3.3 V logic): UART lines are compatible at 3.3 V logic; supply the module separately from a LiPo cell or a dedicated 4 V regulator, as the ESP's 3.3 V rail cannot source the peak current the SIM800L demands during transmission
  • Raspberry Pi & other 3.3 V SBCs: UART-compatible; again, power the module from an independent supply

Typical Applications

  • Sending SMS alerts from a home security or sensor system
  • GPS tracker builds that report location via SMS or GPRS
  • Remote equipment monitoring and control over mobile data
  • IoT data logging to a cloud server via GPRS when Wi-Fi is unavailable
  • Emergency notification devices in remote or outdoor installations

Technical Specifications

ParameterValue
InterfaceTTL UART (AT commands)
Supply Voltage3.7 – 4.2 V
Supported NetworksGlobal quad-band GSM/GPRS
SIM Card TypeMicro SIM
Module Dimensions2.5 cm × 2.3 cm
Signal IndicatorOnboard LED (slow = signal, fast = no signal)
MPNSIM800L

FAQ

Q: Can I power the SIM800L directly from the Arduino's 5 V pin?
A: No. The SIM800L requires 3.7–4.2 V and draws high peak currents during GSM transmission. Power it from a dedicated Li-Po cell or a stable 4 V regulator; using the Arduino's 5 V rail risks damaging the module and causing unstable operation.

Q: Does it work in Cyprus and Greece?
A: Yes. The quad-band support covers the 900 MHz and 1800 MHz bands used by all major Cypriot and Greek mobile operators.

Package Contents: 1 × SIM800L GSM/GPRS Module (Micro SIM). Antenna and SIM card are not included.

⚠ Power Warning: Always use a power supply capable of delivering sufficient peak current. Inadequate power is the most common cause of SIM800L resets and failed network registration.
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