Low Voltage Contractors in Wisconsin.
Fire alarm, security, access control, and building automation, installed alongside your power work.
Modern buildings run on low voltage. As a low voltage contractor, WIL-Surge Electric installs the fire alarm, security, access control, and building automation systems that keep facilities safe and code-compliant, along with the controls and instrumentation behind them. Our certified technicians are in-house crews, so life-safety and security infrastructure installs alongside the power work. Several of our technicians hold BICSI certifications.
Fire Alarm & Life Safety
Fire alarm systems are the first line of life safety in a commercial building. We handle fire alarm installation and wiring for commercial, institutional, and public facilities across Wisconsin, installed to code and coordinated with the building's power and other systems.
Because the same team runs the electrical scope, fire alarm devices, circuits, and panels are planned together with the rest of the building instead of fitted in at the end.
A fire alarm system brings together initiating devices, such as smoke and heat detectors and pull stations, with notification appliances like horns and strobes, all supervised by a control panel. Device placement depends on room layout, ceiling conditions, and how each space is used, so changes to the architecture often mean changes to the fire alarm layout as well.
Security Cameras & Access Control
From security camera installation to card-access doors, our crews wire and install the systems that control who comes and goes. Commercial security cameras, access control, and security wiring go in as part of one coordinated low voltage scope.
Owners get security systems that work with the building's electrical infrastructure from day one, installed by an access control contractor that also understands the power feeding every panel and camera.
Security needs tend to grow after move-in. Adding a camera or a card reader later is far simpler when the original installation left spare capacity in power supplies and panels, extra room in pathways, and clear labeling at both ends of every cable. Owners who expect to add doors, buildings, or coverage areas should plan for that capacity from the start.
Building Automation & Controls
Building automation lets facility teams monitor and manage their systems from one place. As a building automation contractor, we install the controls and instrumentation that keep facilities running, and we tie them into the HVAC equipment our mechanical & HVAC crews install, so controls and equipment are built to work together.
A building automation system connects sensors, controllers, and equipment so schedules, setpoints, and alarms can be managed centrally. Temperature and occupancy data guide how equipment runs, and alerts point facility teams to problems before occupants notice them. Planning which points to monitor early keeps the system useful instead of overwhelming.
Planning Pathways, Power & Rough-In
Low voltage systems are easiest to install when they are planned before walls close. Backboxes for devices, sleeves through walls and floors, and pathways for cable all need to be in place during rough-in. Every penetration through a rated wall or floor has to be firestopped, so those locations are best worked out with the rest of the electrical layout.
Low voltage still depends on line voltage. Fire alarm control panels, power supplies, access control panels, and camera equipment all need dependable circuits, and headend equipment needs a room or closet with space and ventilation. Access-controlled doors add another layer of coordination: door hardware, frames, and wiring have to match so locks, readers, and door position switches work together when the door is hung.
Owners and general contractors can help by confirming early which doors will be controlled, where cameras need to see, and how the fire alarm must interact with elevators, HVAC equipment, and door hold-opens. Settling those answers during design keeps devices, wiring, and programming from being reworked after finishes are in place.
Testing, Inspection & Handoff
Life-safety systems are not finished until they are tested. A new fire alarm system is tested device by device and checked against its sequence of operations, the alarms, notifications, and building responses that should follow each input. NFPA 72 sets the framework for that testing, and the local authority having jurisdiction typically witnesses an acceptance test before the building is occupied.
Security systems get their own verification. Camera views are checked against the areas they are meant to cover, recording is confirmed, and each controlled door is tested to lock, unlock, and report the way it should. Facility teams should come away knowing how their systems are laid out and where the panels and equipment live.
After turnover, fire alarm systems require periodic inspection and testing under NFPA 72, and security and automation systems benefit from regular checkups as buildings and occupants change.
One Contract for Power & Low Voltage
Most projects split low voltage and electrical between separate contractors. We self-perform both, so owners and general contractors get one schedule, one point of contact, and one accountable team for the power and the systems that run on it. Pair this work with our power distribution, AV systems, and network & data cabling services for a single electrical package.
See the projects our crews have built in our projects portfolio, explore our commercial electrical services, or request a quote for your low voltage scope.
Plan your low voltage systems.
Preconstruction support, budgeting, and design-build expertise, from a partner who self-performs the work.