> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# SIM808 with Leonardo Mainboard

**Type:** Product page · **SKU:** DFR0355 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/sim808-with-leonardo-mainboard.html ([markdown](https://core-electronics.com.au/sim808-with-leonardo-mainboard.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: 3G.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/3G

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

**Introduction**

 The SIM808 with Leonardo mainboard is the latest Arduino board developed by DFRobot for multi-purpose applications. The onboard SIM808 module includes an integrated quad-band GSM/GPRS and GPS satellite navigation module, and a 4 layer PCB integrates the microcontroller, microphone, headphone jack and GPRS/GPS, giving this board the tiny footprint of a regular credit card! Meanwhile, the board includes a sleep mode feature for extra-low power consumption. And an on-board 3.7V Lipo battery power supply and battery-charging circuit has been integrated into the board, making it ideal for applications such as real-time car tracking, security patrolling and IoT projects.

Compared with the existing SIM808 modules on the market, this SIM808 uses the latest version with better stability.

**APPLICATIONS**

- GPRS network nodes
- Remote communications
- Satellite positioning
- Real-time car tracking systems
- Security
- Internet of things (IoT)
 
**Specification**

- AVR Arduino MCU: ATmega32u4 (Bootloader: Leonardo)
- Operating voltage: 5V
- Input Voltage: 5V (USB)/7~23V(Vin)/3.5~4.3V (BAT)
- Low-power consumption: (100mA@7V-GSM mode)
- Digital I/O Pins: 20
- PWM Channels: 7
- Analog Input Pins: 12
- DC Current per I/O Pin: 40 mA
- DC Current for 3.3V Pin: 50 mA
- Flash Memory: 32 KB (of which 4 KB is used by the bootloader)
- SRAM: 2.5 KB
- EEPROM: 1 KB
- Clock Speed: 16 MHz
- Wireless Module: SIM808 GSM/GPRS/GPS module
- Quad-band 850/900/1800/1900MHz – 2G GSM network
- GPRS multi-slot class 12/10
- GPRS mobile station class B
- Compliant to GSM phase 2/2+ 
    - Class 4 (2 W @ 850/900MHz)
    - Class 1 (1 W @ 1800/1900MHz)
- Bluetooth: Compliant with 3.0 + EDR (Not open in this version)
- Time-To-First-Fix 
    - Cold starts: 30s (typ.)
    - Hot starts: 1s (typ.)
    - Warm starts: 28s (typ.)
- Accuracy: Horizontal position 2.5m CEP
- Update rate: 5Hz
- Control: AT command (GSM07.07, 07.05 and SIMCom enhanced AT commands)
- Dimension: 73\*54mm / 2.87\* inches
- Weight: 50g
 
**Documents**

- [Wiki](https://www.dfrobot.com/wiki/index.php?title=SIM808_with_Leonardo_mainboard_SKU:DFR0355)
- [Related Documents](https://www.dfrobot.com/wiki/index.php?title=SIM808_with_Leonardo_mainboard_SKU:DFR0355#More)
 
**Parts List**

- SIM808 with Leonardo mainboard x1
- Built-in Spring GSM Antenna x1
- Built-in GPS antenna x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0355-01.jpg)