As per my previous posts, I have been fitting a tracker and immobiliser to my car. I'm not going to post details of the actual fitting on here for obvious reasons, but I will tell you what it does.
Fitment time would be a few hours for anybody who knows how to do simple wiring. It took me 3-4 times longer but the majority of the time was working out the best way to fit the unit and sorting out what the wiring does. Obviously anybody else who did it wouldn't need to waste that time.
It has a sounder on it which can be used as an alarm, I just use it to indicate when the unit is armed/disarmed and run the unit in silent mode, I don't want anybody knowing it is fitted and going looking for it. It will alarm on vibration, battery disconnection, or the ignition being turned on. The ignition alarm works even if the cars built in immobiliser is activated.
Alarm is done by sending a text message to me which gives me the alarm type, time, location with a url to google maps, and the current speed and direction.
It will keep sending the text messages at 3 minute intervals until I disarm it, which I can do via a text message. I can then turn on the GPRS mode and go online on my phone or laptop and track the car online via the GPS. Alternatively I can keep tracking by text messages
I can turn off the car either through the web interface or via text message. This will stop the engine but will not disable the starter motor. It can be set to operate when the car goes below 20kph to ensure it is travelling slowly, or to happen immediately.
I can also phone the car and listen in to see what is going on.
It operates on a PAYG sim card, which costs 6p per text to my phone as my main phone isn't with the same supplier. I have a spare phone which I keep at home with is on the same supplier (In case my phone is in the car when the car is taken) and texts to that are free.
The GPS receiver is very sensitive. The car is currently in my garage which is built in to my house, under a bedroom, with a metal door and the location is correct to within a few metres.
Total cost including putting credit on the SIM card is about £60. I'm sure that anybody who knows the cars very well would be able to find it and disable it in an hour or two, but it is an extra level of security on the car which at this price seems like a nice-to-have. Particularly in these days when a lot of cars are taken by somebody stealing the keys and quite often seem to park the car up for a few days nearby to see if it has a tracker fitted.
There are other features such as geo-fencing and speed limit alerts which I don't bother using but are nice-to-have for monitoring other peoples use of the car.
MC