4 7 out of 5 stars 10 538.
Car alarm battery backup.
This optional back up battery adds to the security of any install maintaining power delivery to your security system even if would be thieves try to silence the siren by disconnecting your vehicle battery.
This 520t back up battery works excellent and it is not complicated to install it or add it to your alarm system the only one thing that made me to uninstall it was because i use my truck just a few days in a month and the rest of the time as it is parked in the garage this back up battery keeps draining your car s battery so in about 15.
12v dc loud 6 tone car alarm siren security alarm siren horn battery back up makes noise even if thief disconnects main car battery key on off feature to allow manual override.
It is also less expensive.
Get it as soon as thu jun 11.
If your vehicle has a backup alarm you will hear the alarm go off.
Free shipping on orders over 25 shipped by amazon.
We recommend the encore bbs 1 as it improves on the directed 515r features.
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You ll need to reconnect the battery and repeat steps 1 and 2 to disable the alarm system.
You may also need to insert the key into the ignition and start the vehicle for the alarm to be disabled before trying steps 1 and 2 again.
Amazon s choice for car alarm battery.
This hidden battery kicks in when somebody cuts off the main power source by clipping the battery cables for example.
The brain and alarm features may be wired to the car s main battery but they usually have a backup power source as well.
Enter a new vehicle directed electronics 520t back up battery system.