# GSM GPRS SIM800L Quad Band module plus antenna

> GSM GPRS SIM800L Quad Band module with included antenna, compatible with Arduino and other development boards. SIM800L chip, TTL serial port without need for MAX232, automatic boot, status LEDs indicating signal presence. Input voltage 3.7-4.2V, logic level 3.3V (not 5V tolerant). Requires a voltage divider or logic level converter on the RX pin when used with 5V boards.

- Page: https://sigmanortec.ro/en/gsm-gprs-sim800l-quad-band-module-plus-antenna
- Price: 45.56 RON
- Availability: In stock; 1-2 zile
- Reference: 33065 · EAN: 5940149208279
- Category: Mechatronics and IoT > Sensors and Modules > GSM
- Package (shipping data): 0.006 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 05:21 (Europe/Bucharest)

## Description

Adds GSM GPRS connectivity to Arduino projects and other boards, ideal for SMS, calls and data transfer. Quad band operation, simple communication via TTL serial port without MAX232, automatic start-up and includes antenna for better reception. Status LEDs quickly indicate the presence or absence of signal, 3.7-4.2V power supply and 3.3V.
GSM GPRS SIM800L Module, compatible with Arduino and other development boards, the smallest gsm module, Quad-band TTL, serial port, with included antenna.
Specifications:
Chip: SIM800L
Input voltage: 3.7 - 4.2V (battery or power supply)
Logic voltage: 3.3VDC (WARNING, NOT 5V TOLERANT!)
Supported networks: Quad-band
No MAX232 needed, having TTL serial port, connects directly to the development board.
Automatic boot
Status indicator LEDs: slow blink when signal is present, fast blink when signal is absent
Connection:
A voltage divider is required on the RX pin when used with 5V development boards!
IMPORTANT! The RX pin of the SIM800L module requires a 3.3V signal! When used with 5V boards, it needs a logic level converter! Otherwise, you will not see responses to AT commands and risk damaging the module!