FMM920 General description

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FMM920 > FMM920 Manual > FMM920 General description

FMM920 is a tracking terminal with GNSS and GSM connectivity, which is able to collect device coordinates and transfer them via GSM network to a server. This device is perfectly suitable for applications, which require the location acquirement of remote objects.

Package contents

The FMM920 device is supplied to the customer in a cardboard box containing all the equipment that is necessary for operation. The package contains:

  • Already implemented FMM920 device into case;
  • Top and bottom device cover parts;
  • 3.7 V 170 mAh rechargeable Li-ion battery;
  • and output power supply cable with a 1x5 connection pins, which is already installed into device.


Basic characteristics

GSM / GPRS / GNSS features:

  • Quectel BG95-M3, Teltonika TM2500
  • SMS (text, data);
  • Technology LTE CAT M1/NB-IoT/GSM/GPRS/GNSS/BLUETOOTH;
  • Integrated GNSS receiver;
  • Up to -165 dBm GNSS receiver sensitivity.

CELLULAR:

Technology Supported bands
2G bands BG95-M3: B2/B3/B5/B8
4G bands BG95-M3: LTE-FDD (CAT M1):

B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85

LTE-FDD (CAT NB2):

B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B28/B66/B71/B85 GSM: 850/900/1800/1900

Data transfer LTE: Max. 588Kbps (DL)/Max.1119Kbps (UL)
GPRS: Max. 107Kbps (DL)/Max. 85.6Kbps (UL)

Transmit power:

Class 4 for GSM850/900: 23±2dBm

Class 1 for GSM1800/1900: 20±2dBm

Class 3 for LTE-TDD: 23±2.7dBm

Class 3 for LTE-FDD: 23±2.7dBm


Hardware features:

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


Interface features:

  • Power supply: +10... +30 V;
  • 1 digital input;
  • 1 analog input;
  • 1 open collector digital output (connecting external relays, LED, buzzers etc);
  • 2 LEDs indicating device status.


Special features:

  • Fast position fix;
  • High Quality track even in high density urban canyon;
  • Small case;
  • Ready for harsh environment;
  • Easy to mount in limited access areas;
  • Firmly fasten;
  • 1 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;
  • Configurable using Secured SMS Commands;
  • 1x micro SIM card; 1x eSIM;
  • Overvoltage protection;


Description Voltage Duration
Normal operation

+10 ... +30 V

Unlimited

Protection turns on, device turns off 34 V Unlimited
Maximum voltage < 70 V Unlimited
Maximum voltage impulse 90 V 5 ms


Technical features


Part name Physical specification
Navigation indication LED
Modem indication LED
Socket Soldered inner socket
USB Micro USB socket


Technical details
2 W max.
Current consumption at 12 V (Power supply 10...30 V DC)
Nominal: <28 mA
GNSS sleep: <12 mA
Deep Sleep: <3 mA
Online Deep Sleep: 8 mA
Ultra Deep Sleep: 2 mA
Battery charge current Average: 140 mA
Operating temperature (with battery) -20 ... +40 °C
Operating temperature (without battery) -40 ... +85 °C
Storage temperature (without battery) -40 ... +85 °C
Storage relative humidity 5 ... 95% (no condensation)
Device + case weight + battery weight 54 g


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.

Bw nb.png CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
Bw disposal.png 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
Digital Input: 300
Digital Output (Open Drain grade):
Input resistance (DIN1) 47
Input voltage
(Recommended Operating Conditions)
0 Supply voltage V
Input Voltage threshold (DIN1) 4 V
Analog Input:
Input voltage
(Recommended Operating Conditions)
0 30 V
Input resistance 150
Measurement error on 12 V 3 %
Additional error on 12 V 360 mV
Measurement error on 30 V 3 %
Additional error on 30 V 900 mV


Alert.png
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