FMU125 General description

FMU125 is small and professional real-time tracking terminal with GNSS and 3G/GSM connectivity and backup battery. Device equipped with GNSS/Bluetooth and 3G modules, internal GNSS and internal 3G antennas. FMU125 feature RS232 data interface, which gives ability to connect various third-party external devices. It is perfectly suitable for applications where location acquirement of remote objects is needed: fleet management, car rental companies, taxi companies, public transport, logistics companies, personal cars and so on.

Package contents

The FMU125 device is supplied to the customer in a cardboard box containing all the equipment that is necessary for operation. The package contains:

• FMU125 device;
• Input and output power supply cable with 2x6 connection pins;
• Micro USB cable;
• 3.7 V 170 mAh rechargeable Li-ion battery.

Basic characteristics

GSM / GPRS / GNSS features:

• Quectel UC15-A/UC15-T or Quectel UG96, TM2500 (3G(UMTS/HSPA)/2G(GSM/GPRS)/GNSS/BLUETOOTH);
• GPRS Multi-Slot class 12 (Up to 240 kbps);
• SMS (text, data);
• Integrated GNSS receiver;
• Up to -165 dBm GNSS receiver sensitivity.

Hardware features:

• Built-in movement sensor;
• Built-in Bluetooth 4.0 LE;
• Internal High Gain GNSS antenna;
• Internal High Gain GSM antenna;
• Internal flash memory 128MB (422 400 Records);
• 170 mAh Li-ion rechargeable 3.7 V battery (0.63 Wh).

Interface features:

• Power supply: +10... +30 V;
• 2 digital inputs;
• 1 analog input;
• 1 open collector digital output (connecting external relays, LED, buzzers etc);
• 1-Wire temperature sensor;
• 1-Wire iButton;
• LVCAN RX (INPUT 5);
• LVCAN TX (INPUT 6);
• 1 RS-232 interface;
• 1 RS-485 interface;
• 2 LEDs indicating device status.

Special features:

• Fast position fix (Outdoor areas);
• High Quality track even in high density urban canyon;
• Ultra small case;
• Ready for harsh environment;
• Easy to mount in limited access areas;
• Firmly fasten;
• 2 LED status indication;
• Real time tracking;
• Smart data acquisition based on:
  • Time;
  • Speed;
  • Angle;
  • Distance;
  • Ignition or any other I/O event;
• Sending acquired data via GPRS;
• GPRS and SMS I/O events;
• Virtual odometer;
• Jamming detection;
• Configurable using Secured SMS Commands;
• 2xSIM Card (Dual-SIM)

• Overvoltage protection;

Technical features

Part name	Physical specification
Navigation indication	LED
Modem indication	LED
Socket	Soldered inner socket
USB	Micro USB socket
GNSS	Internal GNSS antenna
GSM	Internal GSM antenna

Technical details
2 W max. Current consumption at 12 V (Power supply 10...30 V DC)	GPRS: average 64.59 mA rms Nominal: average 37.77 rms GNSS sleep: average 11.1 mA Deep Sleep: average 6.2 mA Online Deep Sleep: average 6.5 mA
Battery charge current	Average 140 mA
Operating temperature (without battery)	-40..+85 °C
Storage temperature (without battery)	-40..+85 °C
Storage relative humidity	5..95% (no condensation)
Device + case + battery weight	52 g

Dimension drawing:

Technical information about internal battery

Internal back-up battery	Battery voltage (V)	Nominal Capacity (mAh)	Power (Wh)	Charge temperature (°C)	Discharge temperature (°C)	Storage temperature (°C)
Li-ion rechargeable battery	3.75～3.90	170	0.64 – 0.66	0 to +45	-20 to +60	-20 to +45 for 1 month -20 to +35 for 6 months

Batteries are covered by 6 month warranty support.

	CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
	Battery should not be disposed of into general household waste. Bring damaged or worn-out batteries to your local recycling center or dispose them into a battery recycle bin commonly found in supermarkets.

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 (DIN1)	47			kΩ
Input resistance (DIN2)	51.7			kΩ
Input voltage (Recommended Operating Conditions)	0		Supply voltage	V
Input Voltage threshold (DIN1)		7.5		V
Input Voltage threshold (DIN2)		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		3		%
Additional error on 12 V, Range 1		360		mV
Measurement error on 30 V, Range 1		3		%
Additional error on 30 V, Range 1		900		mV
Input Voltage (Recommended Operating Conditions), Range 2	0		+30	V
Input resistance, Range 2		150		kΩ
Measurement error on 12V, Range 2		3		%
Additional error on 12 V, Range 2		360		mV
Measurement error on 30 V, Range 2		3		%
Additional error on 30 V, Range 2		900		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
RS232/RS485 Input Voltage:
RS485 input voltage range on A or B pin (common-mode voltage)	-7		+12	V
RS232 input voltage range (common-mode voltage)	-15		+15	V

Analog Input error margin can increase if temperature varies.

Absolute maximum ratings

Characteristic description	Value
	Min.	Typ.	Max.	Unit
Supply Voltage (Absolute Maximum Ratings)	-32		+32	V
Drain-Source clamp threshold voltage (Absolute Maximum Ratings), (Idrain = 2 mA)			+36	V
Digital Input Voltage (Absolute Maximum Ratings)	-32		+32	V
Analog Input Voltage (Absolute Maximum Ratings)	-32		+32	V
RS232 Input Voltage (Absolute Maximum Ratings)	-25		+25	V