Digital Systems DSF22

DSF22 is the third and latest generation of GPS/GSM monitoring terminal developed by Digital Systems, replacing older models DSF20 and DSF21.

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It is designed as a multifunction device that includes a combination of four different devices in one:

  • Real time GPS monitoring device with unique fuel control module
  • Fuel theft alarm (sends SMS alert in case of fuel theft)
  • Vehicle security system with engine cut-off possibility
  • Remote control (activate vehicle’s equipment remotely)

Direct connetction to vehicle’s fuel sensor

DSF22 have unique fuel control module with possibility connect to vehicle’s original fuel sensor. No matter – is it passenger car, commercial van, truck or tractor. If there is fuel sensor in the fuel tank, DSF22 can read it and provide accurate information about fuel level.

Fuel theft alarm

Each time after vehicle’s ignition is switched off, DSF22 remembers actual fuel level in vehicle’s fuel tank. In case if fuel level drops, DSF22 will send SMS alert to predefined phone numbers and activates siren. Fuel theft alarm works with vehicle’s original fuel sensor, there is no need to install additional fuel sensors.

Fuel data procession

DSF22 have built-in fuel data procession algorithm. Depending of vehicle usage, aquired fuel data will be processed, removing noises cause by fuel moving in the fuel tank. As result of data procession, DSF22 will send correct amount of fuel to monitoring server.

Low power consumtion

With help of speaccialy designed idle mode, DSF22 have very low power consumtion – only 38mA, with full functionality. No need to disable features to reduce power consumtion.


  • 1 digital input for Ignition status monitoring
  • 1 specialized input for direct fuel sensor connection
  • 1 universal Analog input 0…30V
  • 1 digital input for general purpose, also configurable as digital output
  • 1 digital Open-collector output
  • 3 system’s status LEDs
  • External GPS antenna
  • External GSM antenna


  • Extra small size – only 67x45x18 mm
  • Real time tracking
  • Smart algorithm of data acquisition (time, speed, angle, special events)
  • Very low GPRS traffic usage
  • Protection against unlimited GPRS sessions
  • Supports GPS and GLONASS
  • Supports positioning based on GSM cells
  • GPS signal interruption alert
  • Large internal FLASH memory – stores up to 8000 km
  • Vehicle’s battery voltage monitor
  • Automatic ENGINE running detecting
  • Direct connection to vehicle’s standard fuel sensor
  • Fuel Theft alarm function
  • Unique fuel data procession algorithm

Server Integration

EU (
US (
Server port46991

General information



Weight100 g (3.53 oz.)
Size67x45x18 mm (2.64x1.77x0.71 in)

GNSS Location

External antenna (GNSS)Yes


Cellular network typeGSM Quad Band
External antenna (Connection)Yes
Cellular network generation2G


Number of outputs1
Number of inputs (all types)3
ACC/Ignition inputYes
Discrete inputsYes
Analog inputsYes

Hardware extras

Fuel level sensor readingYes

Tracking features

Tracking modesContinuous

Remote management

Server connection setup over SMSYes
Remote device configurationYes (over SMS), Yes
Remote outputs controlYes (over SMS), Yes
Forced LBS location update over GPRSYes
On request
Forced GNSS location update over SMSYes
On request

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