Gappa Security Solutions

Marshall Best Security Representative in Wisconsin, Minnesota, and Northern Illinois

We are a full service access control company.  We provide, install, and maintain lock and door hardware, masterkeying systems, electronic card access systems, and IP cameras.



We at Gappa Security Solutions seek to meet all of your security needs. We offer a variety of hardware and keying products, including our primary Marshall Best Security (MBS) line of interchangeable cores and lock hardware that work with your current Best Access system.  We also supply MBS Exit Devices and Closers.

For patented keying systems, we offer KABA comprehensive retrofit keying systems and Dorma SKC keying systems. 

We partner with Avigilon to provide fully-integrated, state of the art camera surveillance and electronic access systems.

We also provide a full range of electronic access options including Continental Access Control Systems, Identiv Hirsch Access Control Systems and scramble pads, Infinias Access Control Systems, HES electric strikes, HID and Farpointe proximity readers, cards, and key fobs, key-operated electric switches, and Aiphone camera entry systems.

Lock and Door Hardware

Our MBS product line features the world-famous Small Format Interchangeable Core compatible with lock housings manufactured by: Arrow, Best, Sargent, Falcon, Schlage, and others. Our MBS products also include a full set of lock hardware, including Cylindrical Locksets, Mortise Locks, Padlocks, Exit Devices, Door Closers, and a host of other options.  Go to the products page to browse the MBS Product Catalog.

Gappa Security Solutions provides Dorma and KABA patented keying options that can integrate with your existing lock systems.

Electronic Access and Cameras


Gappa Security Solutions is an Avigilon Certified Partner. We provide and install Avigilon Comprehensive IP Security Camera Systems and Avigilon IP-Based Electronic Access Systems.

Gappa Security Solutions is an authorized Continental Access integrator. We provide Continental products, installation, training, and support for this all-in-one security management system.

Gappa Security Solutions is an authorized Dealer for Hirsch Electronics.  Our Hirsch products include complete access control systems and the industry standard ScramblePad keypad.

Gappa Security Solutions provides, installs, and services complete IP-Based Infinias access control systems, utilizing POE controllers and industry-standard proximity cards and fobs.  We also provide IP-Based cameras that can integrate with our Infinias system.

Gappa Security Solutions partners with Aiphone to provide comprehensive audio and video security screening solutions for entryways.  A typical Aiphone camera system allows office personnel to screen incoming visitors.