> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ctechnology.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Teltonika FMC640/650

> Documentation and installation instructions for Teltonika FMC640/650.

The Teltonika FMC640/650 is an advanced GPS tracking device designed for heavy-duty vehicles, including trucks, buses, and construction machinery.
It features robust connectivity options via external antennas, multiple input/output capabilities, and supports various sensors for comprehensive vehicle monitoring.

## Data sheet

The following excerpt is the most relevant information for marine and motorcycle applications from the [official data sheet](https://www.teltonika-gps.com/products/trackers/professional/fmc650).
Please always refer to the official documentation for the most accurate and up-to-date information.

| Feature | Specification |
| - | - |
| Mobile Network Communications | LTE (CaT1) / 2G (GSM/GPRS), LTE Cat M1 available as FMM650 |
| Maximum Operating Voltage | 32.0V |
| Antennas | External for GSM and GPS |
| BLE (Bluetooth) Option | Yes |
| SIM Card Format | Dual SIM or eSIM |
| Accelerometer / tamper sensor | Yes |
| Battery Capacity (internal) | 550mAh |
| Power consumption | 45mA\@12V nominal, 4-11mA\@12V sleep |
| Ingress Protection | IP41 |
| Digital Ins / Outs | 4 / 4 |
| ADC Inputs | 4 |
| CAN bus | Yes ([NMEA2000 support](#nmea-2000-support-scope), custom protocols) |

### Temperature sensors

The FMC640/650 supports BLE EYE sensors for temperature monitoring.
For more information, please refer to the [temperature (BLE) documentation](/hardware/auxiliary/temperature).

## Installation instructions

Please contact our Support [support@ctechnology.io](mailto:support@ctechnology.io) if you need any installation guidance or instructions.

## NMEA 2000 support scope

> **Disclaimer**\
> Our NMEA 2000 integration **natively supports only the items listed below**. Any additional parameters, multi-engine/tank setups, or proprietary PGNs/features must be reviewed and agreed separately (feasibility, timeline).

| Category | Property |
| - | - |
| Battery | State of Charge % (DC type 0) |
| | State of Health % (DC type 0) |
| | Battery Capacity (Ah, DC type 0) |
| | Charger Enable / Disable |
| | Time to Empty |
| | Distance to Empty |
| Fuel & Trip | Fuel Level % (type 0) |
| | Fuel Rate |
| | Trip Fuel Used |
| | Trip Run Time |
| Engine | Oil Level % (type 4) |
| | Engine Oil Pressure |
| | Engine Oil Temperature |
| | Engine Temperature |
| | Alternator Voltage |
| | Engine Coolant Pressure |
| | Fuel Pressure |
| | Percent Engine Load |
| | Percent Engine Torque |
| | Total Engine Hours |
| | Engine Discrete Status 1 |
| | Engine Discrete Status 2 |
| Environment/Depth | Water Depth at Transducer |
| | Water Depth Transducer Offset |
| | Wind Speed |
| | Air Temperature |

**Notes**

* Applies to **one engine and one tank**.
* Compatibility depends on the vessel network publishing these PGNs per NMEA 2000 conventions.
* Extensions (e.g., multiple engines/tanks, additional sensors, custom/proprietary PGNs) require a separate technical discussion.

*“NMEA 2000” is a trademark of the National Marine Electronics Association (NMEA).*


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