You probably use your factory-installed keyless entry system every time you're in and out of your car. How would you like to add on a full-featured security and remote start system - and still use the same keychain transmitter for many of the functions? Code Alarm's AS9233ST upgrade module offers a seamless way to augment your existing keyless entry system with these cool features.

The package includes a glass-mount antenna with built-in LED lights, along with a valet switch that shuts off the system when needed. The dual-stage shock sensor emits a warning chirp at first contact, and will kick in the full alarm if someone gives your ride a hard knock. The system includes a starter interrupt output with relay, so your vehicle won't start for an unauthorized driver. The included onboard relay will flash your lights to confirm system operation and remote start. Best of all, this module works with most diesel and hybrid vehicles.

Everybody in the house will be able to use the system — it will accept up to four remote transmitters. When you want to use the remote start function, use one of the two simple one-button StartStick transmitter included with the package.

Highlights:

• add-on security and remote-start module for factory keyless entry system
• package includes module, glass-mount antenna, two extended-range one-button remotes
• system uses factory keyless entry remotes for operation of security and keyless entry
• included remotes used for remote start
• 2-stage shock sensor