GPS trackers

GPS trackers

GPS trackers

How they work: 

GPS trackers let others see where it, and whatever it's attached to, is using any internet device - a phone / PC / Mac / tablet etc). To be more exact, it displays the tracker's last reported position on a virtual map, along with its historical paths on earlier dates. Its location NOW can be revealed by sending it a "Locate now" command (from the Commands menu) in one of the apps or web-apps. 

Recently one of our Prime2 trackers made a journey, with a continuous reporting trail, from Mayo to Mongolia and back, routing south of the Black & Caspian Seas outbound and north of them homeward.

Any number of people who have been given the tracker's login details (Account reference and Password if set) can access this information simultaneously. Our customers have full control of their tracker(s), and don't rely in any way on 3rd parties.


In addition, tracker alerting options detect and report: 

  1. movement when and if it's motion sensitivity is armed;
  2. entries into or exits from designated locations or zones;
  3. when and if its panic button is pressed;
  4. when and if its battery level drops below a settable level, such as 20%.

Each alert type can be turned on or off, except low battery alerts.

Technical operation: The GPS tracking devices contains a GPS module, a modem; an accelerometer to detect motion, and a rechargeable battery. All are contained in a housing whose size depends on battery size and whether it contains one or more magnets. Sizes range from a matchbox to a quarter-brick.
When placed under open sky or near a window, they receive radio transmissions from satellites orbitting Earth, and work out latitude and longtitude to six decimal places by making various assumptions about the atmosphere. These assumptions are refined with each subsequent report. Location accuracy depends mainly on the satelite signal strength and the length of time since the last position report. Weak signals and long time intervals between reports give reduced accuracy. First position fixes after a period of non-motion are inevitably less accurate than those reported in quick succession. GPS satellite signal reception is weakened by surrounding metallic or conducting surfaces, buildings, reinforced concrete walls or floors, trees, etc. These absorb high frequency (GHz) radio waves.  
Position reports are sent via GSM/GPRS data packets through the mobile phone networks to a server database, from which customers can view/access the information up to and including the last reported position within a few seconds, using any of the 3 available user interfaces:

  1. The large screen device (computer) web app (web address, using any OS or browser;
  2. The small screen device (phone) web app (, using any phone or browser;
  3. The TrackServer App ("TrackServer) from the App Store or Play Store;

ConstellationGPS.gif(From Wikipedia)

Location Push:  Our devices are "push" devices in that they actively send out location data when on and moving, at given time intervals. Old "Pull" trackers need to be texted to get them to reply with their location co-ordinates. They are also superior to "logger" devices, which need to download their data. Users can send a command from a phone to change a tracker's settings. When a tracker stops moving, it reduces to a "heartbeat" report of reporting every 4 hrs.

User interfaces:  Full control to set a tracker is possible to differing extents in each user interface. The most powerful interface is the Large screen interface for any kind of computer (PS or Mac) at See the training informaiton in the HowTo section - HowTo

Alerts:  The User interfaces and TrackServer apps let users turn on/off the zone alerts, motion detection alerts, and set Contact details. The (low) battery alert can indicate both a flattening battery and battery disconnection.

Our Unique Selling Points (USPs):

  • allows tracking using any internet device;
  • long (2 years) look back history;
  • panic button gives alert typically within 1 minute;
  • alerts can be either SMS or email;
  • up to 4 geo-fences/zones available;
  • the degree of motion sensitivity can be adjusted over the air by us;
  • they work straight from their box - no need to rent a SIM to put into it;
  • SIM cards roam across most of the world;
  • we provide 6 modes or operation that extend battery life from days to months.


Each tracker has two antennas, one for communication (GPRS/GSM) and one for satellite signal reception (GPS). These are located on the front (with status LEDs) face of the tracker or on the side opposite any internal or external magnets. This MUST face away from any metal chassis or bulkhead, towards the outside world, not necessarily the sky (road surface, cab interior, etc) to enable the weak satellite radio waves to reach the GPS antenna. The web apps display the times of the last GPS fix time/date, and the Last Communication (GPRS) time/date,  to show when these last occured. If either is overdue, it shows signal strength problems for whatever reason. Tracker antenna orientation could be one of them.

Battery duration:  

Our Lithium Polymer batteries contain a PCB for under- and over-voltage protection, short circuit and high temperature cut-out for operating safety. If a tracker has been allowed to be flat for a very long time, it may take many hours or even days to start recharging (flashing red LED) when attached to a charger. Please be patient, the battery's internal voltage has to rise to a certain minimum voltage before recharging appears to start.
Battery life depends on:

  1. the size of the internal battery (the number of mAh - milliAmp-hours);
  2. the location reporting frequency;
  3. frequency of alerts;
  4. the proportion of time that it's moving and not moving;
  5. the strength of the available satellite radio signal.

Figures below represent typical/normal usage conditions under open sky - typically reporting typically up to 200 times per day. Reporting more than 400 times per day is abnormal usage. Tracker battery life depends on many factors, including extent of constant movement, the tracker's local physical environment, and the satellite radio signal strength. If the GPS module has to work at maximum gain (amplification) due to weak signal strength, it will deplete quickly. Lithium polymer batteries have a finite lifespan of 2-3 yrs typically, and need replacement.


Warranty period:  12 months from purchase.

Certifications:         CE_Mark50x36.jpg FCC_logoB50x36.jpg RoHS36x36.jpg AssistIrelandLogo185  Assist Ireland website link:  Prime 1     

Instructions on use of GPS tracking and alerting devices (trackers):  GPS2Find_UseInstructions.pdf

Product Flyer:  GPS2Find_Trackers.pdf

Discontinued use:  If a tracker hasn't reported for 6 months, we reserve the right to discontinue it and its SIM monthly rental. We will attempt to contact customers before doing this. Please read our Terms of service.

Display per page
Sort by

The GL3-26 is an advanced GPS tracker with a 2600mAh 10-14day battery life and a 2G/3G modem.

179.00 *
Delivery weight: 258 g

In stock

The GL3-26HW is a GL3-26 tracker with a 8-24V wiring kit inside an ABS sealed box.

207.00 *
Delivery weight: 235 g

In stock

The Prime2 Pr2-20R has many advanced features, a 2000mAh 10-14day battery, a 2.5G modem and an input port for an external GPS antenna. Limited stock of unused superceded model.

Old price 189.00 €
159.00 *
Delivery weight: 235 g

In stock

The G7-67 is an advanced GPS tracker in a waterproof magnetic housing containing a 6700mAh 4-6wks battery life and a 2G/3G modem.

251.00 *
Delivery weight: 245 g

In stock

The Prime-ME is a small smooth slim tracker that's ideal for personal use or where space is limited, with a two day battery life.

98.00 *
Delivery weight: 135 g

In stock

The Vector50 is a Prime2 tracker in a protective ABS plastic box with a screw-cap IP68 USB charging port, two internal Nd magnets, flanges for non-magnetic attachment, and a 35 day battery life.

265.00 *
Delivery weight: 0.35 kg

In stock

The Praetorian Prt-100 is a compact 10 Ah battery, with 2 internal Neodymium magnets, a waterproof (IP67) external USB charging port, and a 2-3 month battery life in Normal operation, or 12 months in Eco-mode(12 hrs).

275.00 *
Delivery weight: 540 g

In stock

The Pulsar-100 is a tracker with a 1 year battery life, when reporting its position 1 or 2 times per day in Battery Save mode, inside a 4mm steel channel housing that can be welded or bolted to an asset.

175.00 *
Delivery weight: 975 g

In stock

The Quasar-100 is a tracker with a 1 year battery life, when reporting its position 1 or 2 times per day in Battery Save mode, inside a flanged ABS box that can be attached to an asset.

175.00 *
Delivery weight: 975 g

In stock

The G7-116 is an advanced GPS tracker in a waterproof housing containing a 11.6Ah 6-8wk battery life and a 2G/3G modem.

305.00 *
Delivery weight: 410 g

In stock

The T920 is a Teltonika FMB920 tracker with a pre-installed SIM and initial free credits.

119.00 *
Delivery weight: 120 g

In stock

The W-A20 GPS watch functions as a normal watch but with GPS location reporting and a range of other functions.

125.00 *
Delivery weight: 240 g

In stock

The Clam-100 is a 9-12month (in 2hr Eco mode) 2G magnetic tracker with a 10,000 mAh battery, 2 internal Neodymium magnets, in a IP65 waterproof ABS box with stainless steel screws securing its lid.

255.00 *
Delivery weight: 480 g

In stock


Prices incl. VAT, add delivery