Software Downloads

There is no charge for downloading the latest version of our software.

Click on the appropriate link to download your software installer. After downloading, click on the installer's icon to install your software.

If you are updating to a newer version of the software, proceed as if installing for the first time. The newer version will overwrite the old version, but will leave your existing data and settings intact.

When you run the installer, you may see a warning that Windows Protected Your PC. Click on the More Info link. Verify that the Publisher is INTELLIKEY Corporation. If this is the case, the installer is okay to run. If not, please contact INTELLIKEY to let us know that there is something wrong with our installer.

Quantum Plus

Standard Version

The Quantum Plus software allows a site to manage its ACS4000 access control system. It maintains a database of programming information for all controllers and keys and interfaces through the INTELLIKEY programming equipment to update and interrogate Intelligent Locks and Keys.

Download Quantum Plus   Version 2.0 Update 12   Updated: 14 Jan 2025   File size: 24982168 bytes   What's new

To order an installation CD, click here.

USB Drivers

Drivers for the new model KPU and LPU with built in USB ports.

KPU and older model LPU   Updated: 14 Mar 2024   File size: 2457560 bytes
Newer LPU   Updated: 11 Jun 2024   File size: 243321 bytes

Older Software

Quantum Plus replaces INTELLIKEY's older Quantum and EZ123 software. It features a user interface that will be familiar to users of either product. Quantum Plus makes use of modern database technologies for faster and more flexible operation. Users of the older software are encouraged to upgrade to Quantum Plus, at no charge. Before upgrading from an older version, contact INTELLIKEY about options for upgrading your existing lock and key information for the new software.