Car alarms
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Want the car not to start without you? With the Cobra alarm we also fit engine immobilisation with a driver card.
For a price, send us the make, model, year and city.
We work in several cities in Serbia. Tell us your city.
What do you want Cobra to protect?
The alarm always protects the doors, bonnet and boot. We choose the other parts by your car and where you park.
Ultrasonic sensor
- The alarm goes off when someone breaks a window and reaches into the car.
- The siren and indicators work for 28 seconds.
Tilt sensor
- It alerts when someone lifts the car to steal the wheels or tow it.
- On the Cobra 4822 it is built in, on the others it is added.
Siren with its own battery
- It sounds even when a thief cuts the cable or removes the battery.
- Without it the alarm sounds the car horn.
Engine immobilisation and driver card
- While the alarm is on, the engine does not start.
- The engine starts only when the alarm recognises your card or PIN.
Microwave sensor
- It protects the cabin of a convertible.
- It does not react to moving air.
It works with your key
Cobra 4821, 4822 and 4823 work with the factory remote, if the car supports it. If it does not, we add a Cobra remote.
To choose the equipment, send us the make, model, year and what you want from the alarm.
So the engine does not start with someone else’s key
A copy of the key unlocks the car and switches off the alarm, just like your key. A relayed keyless key signal can do the same.
That is why with Cobra we fit engine immobilisation and a driver card. The engine starts only when the alarm recognises the card you carry, or when you enter the PIN.
Immobilisation can also turn on by itself when you switch off the engine.
Two cards, different roles
You carry the driver card with you. The alarm recognises it by itself and allows starting. The card has a battery that you replace.
You keep the PIN code card out of the car. It has a 4-digit code. You use it to switch off the alarm when the remote does not work.
How much does a Cobra alarm cost
Alarm and fitting in one price
The price depends on your car and the parts you choose. We tell you the exact price when you send the make, model and year.
- Payment
- cash or through a company
What you get
- An alarm set up for your car
- Fitting and set-up
- A test of every function
- An explanation and the PIN code
From your car to a fitted Cobra
We check how the alarm connects to your car, agree the equipment and price, then fit the system.
- 1
You tell us what you want
Send us the make, model, year and city. Tell us how you unlock the car and whether you want engine immobilisation.
- 2
We check what works on your car
We check whether the alarm can work with your factory key. We suggest sensors, a siren and a driver card.
- 3
We agree the equipment and price
The work starts only when you agree.
We tell you the exact price when you send the make, model and year.
The price depends on:
- How the alarm connects to your car.
- Which sensors and siren are fitted.
- Whether engine immobilisation goes in and how many driver cards.
- Whether we add a separate GPS device.
- 4
We fit, set up and test
We check the doors, bonnet, boot and the fitted sensors. We show you the button with a light, entering the PIN and service mode.
What Cobra alone does not do
It does not alert your phone. The Cobra alarm has no SIM card and no app. For alerts and the car’s location we fit a separate device for GPS vehicle tracking with it.
Engine immobilisation and the OBD port are different things. Cobra with immobilisation makes theft harder, and OBD port relocation makes the factory port not work without your adapter.
An alarm without immobilisation does not stop the headlight attack. Engine immobilisation or an immobiliser helps there.
When you already have a Cobra
These steps apply to the Cobra 4821, 4822 and 4823. At handover we show you the procedure for the model we fitted.
When you lock the car
The light on the button comes on. After 25 seconds it starts flashing, and then the alarm protects the car. If a door was left open, the indicators flash 3 times.
Keep the PIN code
Keep the PIN card at home, not in the car. If the PIN is changed, the manufacturer cannot recover it. So write the new code down straight away.
The remote does not work and I cannot switch off the alarm
- Unlock the doors with the key.
- Turn on the ignition, so the dashboard lights come on. Do not start the engine.
- If the alarm does not switch off by itself, enter the PIN with the button with a light.
- Press the button as many times as the first digit. Wait for a longer flash of the light. Enter the other 3 digits the same way.
The alarm went off. What set it off?
Before turning on the ignition, count the flashes of the light:
1 cabin, 2 tilt, 3 ignition, 4 driver’s door, 5 other doors, 6 bonnet, 7 boot, 8 extra sensor.
From 9 to 19 it is a technical cause. Then call us.
The ignition clears this display. The last 6 alarms can be read later too.
Someone stays in the car or a window is open
The ultrasonic sensor may then go off for no reason. Switch it off for one locking:
- Turn off the ignition.
- Within 5 seconds press the button with a light and hold it.
- Release it on the first flash, then lock the car.
The rest of the protection works. The ultrasonic sensor comes back at the next locking.
How to turn on service mode
Before a service. The alarm and immobilisation then do not turn on by themselves, and you give the mechanic neither the card nor the PIN.
Open the driver’s door, turn on the ignition and enter the whole PIN.
Protection comes back by itself after 10 ignition cycles or the first locking.
Why the alarm does not beep when I lock the car
That is how it should be. The manufacturer keeps the locking beep switched off in Europe. The indicators and the light on the button confirm it.
Questions before fitting
Can the alarm ask for the card after unlocking too?
It can, this is the extra driver check. After unlocking, the alarm waits 30 seconds for the card or the first 2 digits of the PIN. If it does not get them, it goes off when someone opens the bonnet or turns on the ignition.
How much does a Cobra alarm cost?
There is no single price, because we connect each car differently, and you choose the sensors, siren and card. The price includes the alarm, fitting and set-up. We tell you the exact price when you send the make, model and year.
Does Cobra work with my key?
If the car supports it, yes. The alarm then turns on when you lock the car with the factory key. If it does not, we add a Cobra remote. Before the appointment we check your car model.
Do I have to pay anything monthly?
Not for the alarm itself, because it has no SIM card.
What when the driver card battery runs out?
You replace the battery yourself. While the card does not work, you switch off the alarm and immobilisation with the PIN code.
Can a changed PIN be recovered?
No. The manufacturer cannot recover a changed PIN. Keep the code written down out of the car.
Does Cobra stop the engine while driving?
No. In Europe that function is switched off. Immobilisation prevents the engine from starting when the alarm is on.
More about alarms and protection
OBD port relocation
It does not work without your adapter.
More about OBD port relocation
Immobiliser
The engine does not start without the fob.
More about the immobiliser
GPS tracking
You see on your phone where the car is.
More about GPS tracking