> ## 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).*