They are two types of trailer / porter cabin  ones with power and ones with out.

The Self Track system can cater for both.

On movement of the trailer the Self Track system will search for a location using GPS.
Once the unit as found its location, it will send its position by GSM or GPRS to a control centre.

This then can be forwarded to you by Mobile phone.

Trailer Tracking

With the geo-fencing fetcher, we can place an electronic fence around your Trailer. Say covering a storage yard. 

This enables the trailer to be moved around a specific area with out alarming. But once the unit breaks the Geo–fence a alarm with be sent to the control centre.

See our geo-fencing page: Geo-Fence.

Trailer and Portcabin Tracking

Because of the Self Track battery life being so long, this tracker is ideal for connecting to a porter cabin and objects that can be removed from they original location where they were drop of.
The tracker can perform over 90 days, sending 10 location report a day.
The Self Track system will send a weekly message to confirm it is working correctly and a weekly status report to confirm the battery level is OK.