FMU125 - Gps Teltonika - Free user manual and instructions

Product Type	Vehicle GPS/GLONASS Tracker
Dimensions	65 x 56 x 20 mm (2.56 x 2.20 x 0.79 in)
Weight	70 g (2.47 oz)
Power Supply	10 - 30 V DC
Operating Temperature	-30 °C to +75 °C
GNSS Module	GPS and GLONASS
Cellular Connectivity	2G (GSM/GPRS/EDGE), 3G (UMTS/HSPA+), NB-IoT
Antennas	Internal GNSS and GSM antennas
Inputs/Outputs	1 digital input, 1 analog input, 1 digital output
Interfaces	USB 2.0 for configuration, 1-Wire for iButton
Tracking Features	Real-time tracking, geofencing, ignition detection, motion detection, overspeeding alerts
Data Storage	Non-volatile memory for 80,000 records
Mounting	Optional with brackets or double-sided tape
LED Indication	Power, GNSS, GSM status LEDs
Maintenance	Keep device clean and dry; check connections periodically
Safety	Professional installation required; no user-serviceable parts inside
Spare Parts & Repairability	Contact authorized service center; device not user-repairable
Manufacturer	Teltonika
Model	FMU125

Frequently Asked Questions - FMU125 Teltonika

How do I install a SIM card in the FMU125?

Open the device lid by unscrewing the four screws. Insert a nano-SIM card into the holder with the chip facing down. Ensure the card is properly seated before closing the lid.

What power source does the FMU125 require?

The device requires a 10-30 V DC power supply, typically from a vehicle's battery. Use the provided power cable with proper fusing.

Can I use the FMU125 without an external antenna?

Yes, the FMU125 has built-in internal GNSS and GSM antennas. However, for optimal performance in shielded areas, an external antenna can be connected.

How do I check the device's connectivity status?

Observe the LED indicators: Power LED (solid green when on), GNSS LED (blinks when fix is acquired), GSM LED (blinks when registered on network). Consult the manual for detailed patterns.

What should I do if the FMU125 stops reporting location?

First, check power supply and fuses. Verify that the SIM card has active data plan. Use the USB cable to connect to a PC and check device logs with Teltonika's Configurator software.

Is the FMU125 waterproof?

No, the FMU125 is not fully waterproof. It has IP30 rating for indoor use. Protect from moisture and install in a dry location.

Can I set up geofence alerts?

Yes, via the Teltonika Configurator or your server platform. Define circular or polygonal zones and specify events for entry/exit.

How to update firmware on the FMU125?

Download the latest firmware from Teltonika's website. Connect the device via USB to a PC and use the Firmware Update tool in Configurator. Follow on-screen instructions.

What is the maximum number of records stored?

The FMU125 can store up to 80,000 records in its internal memory when communication is not possible. Data is uploaded when connection is restored.

How do I factory reset the FMU125?

Disconnect power. Press and hold the Reset button located inside the device while applying power. Hold for 10 seconds until LED patterns change. Settings revert to defaults.

USER MANUAL FMU125 Teltonika

Advanced 3G terminal with RS485/RS232 interfaces

Quick Manual v1.5

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Table of Contents

Table of Contents......2

Know your device....3

Pinout 4

Wiring scheme 5

Set up your device....6

How to insert SIM card and connect the battery 6

PC Connection (Windows) 7

How to install USB drivers (Windows)....7

Configuration (Windows)....7

Quick SMS configuration....8

Mounting recommendations....10

LED indications....11

Characteristics 11

Basic characteristics....11

Electrical characteristics....13

Safety information....14

Certification and Approvals....15

Warranty 16

Warranty Disclaimer....16

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Know your device

Figure 1 FMU125 device view

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Pinout

Table 1 FMU125 2x6 socket pinout

Pin number	Pin name	Description
1	VCC (10-30) V DC (+)	Power supply (+10-30 V DC).
2	AIN 1/DIN 2	Analog input, channel 1. Input range: 10-30 V DC / Digital input, channel 2.
3	RS232 – RX	Input for data receive through RS232
4	RS232 – TX	Output for data transmit through RS232
5	DIN 1	Digital input, channel 1.
6	INPUT 6	TX EXT (LVCAN – TX).
7	GND (-)	Ground pin. (10-30) V DC
8	DOUT 1	Digital output, channel 1. Open collector output. Max. 0,5 A DC.
9	RS485 – A	Signal A wire for RS485
10	RS485 – B	Signal B wire for RS485
11	1WIRE DATA	Data for 1-Wire devices.
12	INPUT 5	RX EXT (LVCAN - RX).

Figure 2 FMU125 2x6 socket pinout

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Wiring scheme

graph TD
    A["STARTER"] --> B["FUEL GUAGE"]
    B --> C["ANALOG LLS SENSOR"]
    C --> D["RS232 LLS SENSOR"]
    D --> E["RFID"]
    E --> F["RFID"]
    F --> G["ALL-CAN300 LV-CAN200 CAN-CONTROL"]
    G --> H["MULTIPLE TEMPERATURE SENSORS"]
    G --> I["IBUTTON"]
    H --> J["MULTIPLE RS485 LLS SENSORS"]
    I --> K["BUFFERED TRANSPARENT MODE"]
    J --> L["POWER SUPPLY 10 - 30V DC"]
    K --> M["BUZZER"]
    K --> N["LED LIGHTS"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fcf,stroke:#333
    style H fill:#cff,stroke:#333
    style I fill:#ffc,stroke:#333
    style J fill:#cfc,stroke:#333
    style K fill:#cfc,stroke:#333
    style L fill:#fcc,stroke:#333
    style M fill:#fcc,stroke:#333
    style N fill:#fcc,stroke:#333

Figure 3 FMU125 Wiring scheme

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Set up your device

How to insert SIM card and connect the battery

1. Gently remove FMU125 cover using plastic pry tool from both sides.
2. Insert SIM card as shown with PIN request disabled or read our Wiki how to enter it later in Teltonika Configurator. Make sure that SIM card cut-off corner is pointing outward from slot. SIM slot 1 is closer to PCB, SIM slot 2 is the top one.
3. Connect battery as shown to device. Position the battery in place where it does not obstruct other components.
4. After configuration, see "PC Connection (Windows)", attach device cover back.

Diagram of a device with a blue arrow and circular label (no text or symbols)

Figure 4 Cover removal

Figure 5 SIM card insert

Isometric technical drawing of a mechanical assembly with no visible text or symbols

Figure 6 Battery connection

Isometric technical diagram of a multi-layered electronic device with an arrow indicating a component (no text or symbols present)

Figure 7 Attaching cover back

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PC Connection (Windows)

1. Power-up FMU125 with DC voltage (10 - 30 V) power supply using supplied power cable. LED's should start blinking, see "LED indications".
2. Connect device to computer using Micro-USB cable or Bluetooth connection:

• Using Micro-USB cable
- You will need to install USB drivers, see "How to install USB drivers (Windows)"
• Using Bluetooth
- FMU125 Bluetooth is enabled by default. Turn on Bluetooth on your PC, then select Add Bluetooth or other device >Bluetooth. Choose your device named – "FMUxxx_last_7_imei_digits", without LE in the end. Enter default password 5555, press Connect and then select Done.

1. You are now ready to use the device on your computer.

How to install USB drivers (Windows)

1. Please download COM port drivers from here.
2. Extract and run TeltonikaCOMDriver.exe.
3. Click Next in driver installation window.
4. In the following window click Install button.

Setup will continue installing the driver and eventually the confirmation window will appear. Click Finish to complete the setup.

Configuration (Windows)

At first FMU125 device will have default factory settings set. These settings should be changed according to the user's needs. Main configuration can be performed via Teltonika Configurator software. Get the latest Configurator version from here. Configurator operates on Microsoft Windows OS and uses prerequisite MS .NET Framework. Make sure you have the correct version installed.

Table 2 MS .NET requirements

MS .NET requirements
Operating system	MS .NET Framework version	Version	Links
Windows Vista Windows 7 Windows 8.1 Windows 10	MS .NET Framework 4.6.2	32 and 64 bit	www.microsoft.com

Downloaded Configurator will be in compressed archive. Extract it and launch Configurator.exe. After launch software language can be changed by clicking 📄 in the right bottom corner (Figure 8 Language selection).

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Figure 8 Language selection

Configuration process begins by pressing on connected device (Figure 9 Device connected via USB).

Figure 9 Device connected via USB

After connection to Configurator Status window will be displayed (Figure 10 Configurator Status window).

Figure 10 Configurator Status window

Various Status window tabs display information about GNSS, GSM, I/O, Maintenance and etc. FMU125 has one user editable profile, which can be loaded and saved to the device. After any modification of configuration the changes need to be saved to device using Save to device button. Main buttons offer following functionality:

1. Load from device – loads configuration from device.
2. Save to device – saves configuration to device.
3. Load from file – loads configuration from file.
4. Save to file – saves configuration to file.
5. Update firmware – updates firmware on device.
6. Read records – reads records from the device.
7. Reboot device – restarts device.
8. Reset configuration – sets device configuration to default.

Most important configurator section is GPRS – where all your server and GPRS settings can be configured and Data Acquisition – where data acquiring parameters can be configured.

More details about FMU125 configuration using Configurator can be found in our Wiki.

Quick SMS configuration

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Default configuration has optimal parameters present to ensure best performance of track quality and data usage.

Quickly set up your device by sending this SMS command to it:

" setparam 2001:APN;2002:APN_username;2003:APN_password;2004:Domain;2005:Port;2006:0"

Note: Before SMS text, two space symbols should be inserted.

GPRS settings:

• 2001 - APN
• 2002 – APN username (if there are no APN username, empty field should be left)
- 2003 – APN password (if there are no APN password, empty field should be left)

Server settings:

• 2004 – Domain
• 2005 - Port
• 2006 – Data sending protocol (0 – TCP, 1 – UDP)

Default configuration settings

Movement and ignition detection:

Vehicle movement will be detected by accelerometer

Ignition will be detected by vehicle power voltage between 13,2 – 30 V

Device makes a record On Moving if one of these events happen:

300 seconds passes

Vehicle turns 10 degrees

Vehicle drives 100 meters

Speed difference between last coordinate and current position is greater than 10 km/h

Device makes a record On Stop if:

1 hour passes while vehicle is stationary and ignition is off

Records sending to server:

If device has made a record it is sent to the server every 120 seconds

After successful SMS configuration, FMU125 device will synchronize time and update records to configured server. Time intervals and default I/O elements can be changed by using Teltonika

Configurator or SMS parameters.

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Mounting recommendations

- Connecting wires

• Wires should be connected while the module is not plugged in.
• Wires should be fastened to stable wires or other non-moving parts. Any heat emitting and/or moving objects should be kept away from the wires.
• There should be no exposed wires. If factory isolation was removed while connecting the wires, the isolation material should be applied.
• If the wires are placed in the exterior or in places where they can be damaged or exposed to heat, humidity, dirt, etc., additional isolation should be applied and the wires should not be loose.
• Wires cannot be connected to the board computers or control units.

- Connecting power source

• Be sure that after the car computer goes to sleep mode, power might be still available on the power wires. Depending on the car model, this may happen in 5 to 30 minutes period.
• When the module is connected, measure the voltage again to make sure it did not decrease.
• It is recommended to connect to the main power cable in the fuse box.
• 3 A, 125 V external fuse shall be used.

- Connecting ignition wire

• Be sure to check if it is a real ignition wire i. e. power does not disappear after starting the engine.
• Check if this is not an ACC wire (when key is in the first position, most of the vehicle electronics are available).
• Check if power is still available when you turn off any of vehicles devices.
• Ignition is connected to the ignition relay output. As alternative, any other relay, which has power output when ignition is on, may be chosen.

- Connecting ground wire

• Ground wire is connected to the vehicle frame or metal parts that are fixed to the frame.
• If the wire is fixed with the bolt, the loop must be connected to the end of the wire.
• For better contact scrub paint from the spot where loop is going to be connected.

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LED indications

Table 3 Navigation LED indications

Behaviour	Meaning
Permanently switched on	GNSS signal is not received
Blinking every second	Normal mode, GNSS is working
Off	GNSS is turned off because:Device is not working or Device is in sleep mode
Blinking fast constantly	Device firmware is being flashed

Table 4 Status LED indications

Behaviour	Meaning
Blinking every second	Normal mode
Blinking every two seconds	Sleep mode
Blinking fast for a short time	Modem activity
Off	Device is not working or Device is in boot mode

Characteristics

Basic characteristics

Table 5 Basic characteristics

Module
Name	Quectel UG96, TM2500
Technology	3G(UMTS/HSPA)/2G(GSM/GPRS)/GNSS/BLUETOOTH
GNSS
GNSS	GPS, GLONASS, GALILEO, BEIDOU, SBAS, QZSS, DGPS, AGPS
Receiver	33 channel
Tracking sensitivity	-165 dBM
Accuracy	< 3 m
Hot start	< 1 s
Warm start	< 25 s
Cold start	< 35 s
Cellular
Technology	UMTS/HSPA
2G bands	UG96: B5/B8/B3/B2
3G bands	UG96: B6/B5/B8/B2/B1
Data transfer	UG96: HSUPA: Max. 5.76MbpsUMTS: Max. 384Kbps (DL)/Max.384Kbps (UL)GPRS: Max. 107Kbps (DL)/Max.85.6Kbps (UL)
Data transfer
Data support	SMS (text/data)
Power
Input voltage range	10-30 V DC with overvoltage protection
Back-up battery	170 mAh Li-Ion battery 3.7 V (0.63 Wh)

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Power consumption	At 12V < 6 mA (Ultra Deep Sleep)At 12V < 6.5 mA (Deep Sleep)At 12V < 7 mAOnline Deep Sleep)At 12V < 12 mA (GPS Sleep)At 12V < 38 mA (nominal)
Bluetooth
Specification	4.0 + LE
Supported peripherals	Temperature and Humidity sensor, Headset, OBDII dongle, Inateck Barcode Scanner, Universal BLE sensors support
Interface
Digital Inputs	2
Digital Outputs	1
Analog Inputs	1
CAN Adapter inputs	1
1-Wire	1
RS232	1
RS485	1
GNSS antenna	Internal High Gain
Cellular antenna	Internal High Gain
USB	2.0 Micro-USB
LED indication	2 status LED lights
SIM	Dual SIM
Memory	128MB internal flash memory
Physical specification
Dimensions	65 x 56,6 x 20,6 mm (L x W x H)
Weight	55 g
Operating environment
Operating temperature (without battery)	-40 °C to +85 °C
Storage temperature (without battery)	-40 °C to +85 °C
Operating humidity	5% to 95% non-condensing

Ingress Protection Rating	IP41
Battery charge temperature	0 °C to +45 °C
Battery discharge temperature	-20 °C to +60 °C
Battery storage temperature	-20 °C to +45 °C for 1 month-20 °C to +35 °C for 6 months
Features
Sensors	Accelerometer
Scenarios	Green Driving, Over Speeding detection, Jamming detection, GNSS Fuel Counter, DOUT Control Via Call, Excessive Idling detection, Immobilizer, iButton Read Notification, Unplug detection, Towing detection, Crash detection, Auto Geofence, Manual Geofence, Trip
Sleep modes	GPS Sleep, Online Deep Sleep, Deep Sleep, Ultra Deep Sleep
Configuration and firmware update	FOTA Web, FOTA, Teltonika Configurator (USB, Bluetooth), FMBT mobile application (Configuration)
SMS	Configuration, Events, DOUT control, Debug
GPRS commands	Configuration, DOUT control, Debug
Time Synchronization	GPS, NITZ, NTP
Fuel monitoring	LLS (Analog), LV-CAN200, ALL-CAN300, OBDII dongle, RS232/RS485 fuel sensor, CAN-CONTROL
Ignition detection	Digital Input 1, Accelerometer, External Power Voltage, Engine RPM (CAN Adapters, OBDII dongle)
RS232	Log Mode, NMEA, LLS, LCD, RFIH HID/MF7, Garmin FMI, TCP ASCII/Binary
RS485	Log Mode, NMEA, LLS, TCP ASCII/Binary

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Electrical characteristics

Table 6 Electrical characteristics

Characteristic description	Value
	Min.	Typ.	Max.	Unit
Supply Voltage
Supply Voltage (Recommended Operating Conditions)	+10		+30	V
Digital Output (Open Drain grade)
Drain current (Digital Output OFF)			120	μA
Drain current (Digital Output ON, Recommended Operating Conditions)		0.1	0.5	A
Static Drain-Source resistance (Digital Output ON)		400	600	mΩ
Digital Input
Input resistance (DIN 1)	47			kΩ
Input resistance (DIN 2)	39			kΩ
Input voltage (Recommended Operating Conditions)	0		30	V
Input Voltage threshold (DIN 1)		7.5		V
Input Voltage threshold (DIN 2)		2.5		V

Analog Input

Input voltage (Recommended Operating Conditions), Range 1	0		+10	V
Input resistance, Range 1		150		kΩ
Measurement error on 12V, Range 1		0.9		%
Additional error on 12 V, Range 1		108		mV
Measurement error on 30 V, Range 1		0.33		%
Additional error on 30 V, Range 1		88		mV
Input Voltage (Recommended Operating Conditions), Range 2	0		+30	V
Input resistance, Range 2		150		kΩ
Measurement error on 12 V, Range 2		0.9		%
Additional error on 12 V, Range 2		108		mV
Measurement error on 30 V, Range 2		0.33		%
Additional error on 30 V, Range 2		88		mV

Output Supply Voltage 1-Wire

Supply voltage	+4.5		+4.7	V
Output inner resistance		7		Ω
Output current (Uout>3.0 V)		30		mA
Short circuit current (Uout=0)		75		mA

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Safety information

This message contains information on how to operate FMU125 safely. By following these requirements and recommendations, you will avoid dangerous situations. You must read these instructions carefully and follow them strictly before operating the device!

• The device uses SELV limited power source. The nominal voltage is +12 V DC. The allowed voltage range is +10..+30 V DC.
• To avoid mechanical damage, it is advised to transport the device in an impact-proof package. Before usage, the device should be placed so that its LED indicators are visible. They show the status of device operation.
• When connecting the 2x6 connector wires to the vehicle, the appropriate jumpers of the vehicle power supply should be disconnected.
• Before unmounting the device from the vehicle, the 2x6 connector must be disconnected. The device is designed to be mounted in a zone of limited access, which is inaccessible to the operator. All related devices must meet the requirements of EN 60950-1 standard. The device FMU125 is not designed as a navigational device for boats.

Do not disassemble the device. If the device is damaged, the power supply cables are not isolated or the isolation is damaged, DO NOT touch the device before unplugging the power supply.

All wireless data transferring devices produce interference that may affect other devices which are placed nearby.

The device must be connected only by qualified personnel.

The device must be firmly fastened in a predefined location.

The programming must be performed using a PC with autonomic power supply.

Installation and/or handling during a lightning storm is prohibited.

The device is susceptible to water and humidity.

Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions.

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Battery should not be disposed of with general household waste. Bring damaged or worn-out batteries to your local recycling center or dispose them to battery recycle bin found in stores.

harmonization: European Directive 2014/53/EU (RED).

Certification and Approvals

• FMU125 EAC
• FMU125 REACH
• FMU125 Declaration of IMEI assignment
• FMU125 CE / RED
• FMU125 E-Mark
• FMU125 RoHS
• FMU125 Declaration of device operation temperature

This sign on the package means that it is necessary to read the User's Manual before your start using the device. Full User's Manual version can be found in our Wiki.

This sign on the package means that all used electronic and electric equipment should not be mixed with general household waste.

Hereby, Teltonika declare under our sole responsibility that the above described product is in conformity with the relevant Community

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Warranty

TELTONIKA guarantees its products to be free of any manufacturing defects for a period of 24 months. With additional agreement we can agree on a different warranty period, for more detailed information please contact our sales manager.

Contact us teltonika.lt/company/contacts

If a product should fail within this specific warranty time, the product can be:

• Repaired
• Replaced with a new product
• Replaced with an equivalent repaired product fulfilling the same functionality
• TELTONIKA can also repair products that are out of warranty at an agreed cost.

Warranty Disclaimer

TELTONIKA PRODUCTS ARE INTENDED TO BE USED BY PERSONS WITH TRAINING AND EXPERIENCE. ANY OTHER USE RENDERS THE LIMITED WARRANTIES EXPRESSED HEREIN AND ALL IMPLIED WARRANTIES NULL AND VOID AND SAME ARE HEREBY EXCLUDED. ALSO EXCLUDED FROM THIS LIMITED WARRANTY ARE ANY AND ALL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO, LOSS OF USE OR REVENUE, LOSS OF TIME, INCONVENIENCE OR ANY OTHER ECONOMIC LOSS.

More information can be found at teltonika.lt/warranty-repair