Over 40 Years in BusinessISO 27001 compliantPublic sector: GSA contract holder
Chicagoland 312-432-5300 · Also in Los Angeles & Phoenix · Nationwide multi-site support · Client Support
Commercial security systems, access control installation, security cameras, managed IT and cybersecurity for manufacturers, distribution sites and offices in Crystal Lake, McHenry, Algonquin, Huntley and Woodstock.
Existing client? 24/7 support: 800-HELP-BTIManaged IT, cybersecurity, cameras, access control or phones. Tell us what you need and a local engineer replies within one business day.
Google reviews ★★★★★
100% financing for parts, labor and licensing at 3.99% for five years

Our installation and support team works from the Downers Grove office and reaches sites across McHenry County on scheduled on site days. One team owns the design, the install and the support afterward.
BTI Communications Group, LTD. serves McHenry County businesses from its Chicagoland office in Downers Grove, and has been in business for over 40 years. We provide managed IT, cybersecurity, commercial security cameras, access control, business phones and network cabling to organizations in Crystal Lake, McHenry, Algonquin, Johnsburg, Lake in the Hills, Cary, Huntley and Woodstock. Call 312-432-5300 or request a free consultation. BTI is a commercial security company, access control installer and managed IT company in one: we install Axis, Avigilon, Kantech, Brivo and Software House C-CURE systems and Cisco Meraki networks across McHenry County.
New to evaluating business technology? Use this guide to understand the choices, compare the platforms we install and find the existing service pages with more detail.
Crystal Lake, McHenry and Johnsburg plants and offices are farther from our office than the inner suburbs, so we plan on site days, spare parts and remote access before dispatch. Agree on change windows and site contacts so a network refresh or door system handover never leaves a shift without an owner.
Over 40 years of BTI experience does not remove the need to define your own requirements. The existing local office and service-area information below explains how your sites are actually served.
Each service works on its own. Together they give you one accountable partner for the technology in your building.
Fully managed or co-managed IT, help desk, on site engineers and Microsoft 365, on our Chicagoland managed IT page.
MDR, email security, MFA, patching and a free consultation and pen test, on our Chicago cybersecurity page.
Stop sensitive data from reaching unapproved AI tools, with controls that fit mid-market IT teams.
Find AI tools and sensitive data paths your team cannot see yet, then put governance in place.
IP video designed before install, with analytics, plate recognition and remote viewing, on our Chicago camera page.
Brivo, Avigilon, Kantech, RS2 and Axis, plus takeovers of existing systems, on our Chicagoland access control page.
Microsoft Teams calling, Webex, Zoom and VoIP installation.
Office moves, network upgrades, cloud migrations and multi location rollouts.
Direct lines: security cameras and access control 630-343-1322; managed IT and cybersecurity 312-492-2613.
Looking for a commercial security company, an access control installer or a managed IT company in Crystal Lake, McHenry or elsewhere in McHenry County? BTI Communications Group, LTD. designs, installs and supports commercial security systems, access control, security cameras, managed IT and cybersecurity from our Chicagoland office in Downers Grove. We also serve Algonquin, Lake in the Hills, Huntley, Woodstock, Cary, Johnsburg, Harvard and Marengo.
BTI is a commercial access control installer, dealer and integrator for McHenry County. We design, install and service card, fob, mobile and cloud door access, gates, dock doors and visitor entry with Brivo, Avigilon Alta, Kantech EntraPass, Software House C-CURE, RS2 and Axis, and we take over existing systems.
Commercial security camera installation designed before anything is mounted: coverage, storage and analytics with Axis, Avigilon, Milestone XProtect, Milestone Advanced Partner, exacqVision, OpenEye and Bosch, including plate recognition at truck gates and remote viewing.
One team for cameras, access control, commercial alarms, intercoms and the network they run on, so video, doors and alarms work as one system with 24/7 system health monitoring available.
Fully managed or co-managed IT with a 24/7 help desk, on site engineers, Microsoft 365 and a 24/7 NOC/SOC, on fixed monthly plans. See how managed IT pricing works.
MDR, email security, MFA, patching and penetration testing, plus IT and cloud consulting for upgrades, moves and multi site rollouts.
VoIP and Microsoft Teams phones, structured and fiber cabling and commercial Wi-Fi designed for offices, plants and warehouses.
Direct lines: security cameras and access control 630-343-1322; managed IT and cybersecurity 312-492-2613. Or request a free consultation.
Cameras, access control, alarms and integration, designed and installed by a local team.
Security buyer journey
Assess
An engineer walks your site and maps cameras, doors and alarms.
Commercial security in McHenry CountyCameras
Coverage, storage and analytics planned before anything is installed.
Camera installation in McHenry CountyDoors
Cards, mobile credentials and cloud access for every site.
Access control in McHenry CountyConnect
One system your team can run from one screen.
Security system integrationSupport
24/7 system health and alert monitoring available, plus a 24/7 converged security NOC/SOC.
Security support plansOne local team for cameras, doors, alarms and support.
IP and AI camera systems designed for your sites.
Cards, mobile credentials and cloud door control.
Intrusion alarms with UL Listed central station partners.
Video, access and alarms working as one system.
Physical and cyber security run together.
Search, alerts and analytics on your video.
Cloud video, access and alarms in one view.
24/7 system health and alert monitoring available.
Searching for an Axis installer, an Avigilon dealer, a Kantech dealer or a Brivo dealer in Crystal Lake, McHenry or elsewhere in McHenry County? BTI is an Authorized and Certified Axis Gold Partner, a Kantech Global Edition Certified Partner and a Cisco Select Partner for Cisco Meraki networks. We design, install and support Avigilon and Avigilon Alta, Brivo with Eagle Eye video, Software House C-CURE, Milestone XProtect, Milestone Advanced Partner, exacqVision, OpenEye, Bosch and Alarm.com systems. Comparing Verkada? Read our guide to Verkada alternatives.
Pick a brand to see its page.
















Help desk, on-site support and a full IT team when you need one.
Managed IT buyer journey
Keep everyone working
Help desk, monitoring and patching handled for you.
IT help deskSwitch without disruption
A planned handover from your current provider.
Switching IT providers in McHenry CountyGrow and move
New offices, new sites and converged security.
Network installation in McHenry CountyAdd depth
Co-managed IT for teams that want backup, not replacement.
Co-managed ITAutomate
Governed AI that takes repetitive work off your team.
AI servicesKnow the cost
Itemized pricing before you sign.
See itemized pricingHelp desk, monitoring and patching from a local team.
A full IT department without the hiring.
Engineers at your door when it matters.
Fast answers for every user.
Add depth to your in-house IT team.
Managed IT that starts with the network.
A planned handover with no downtime surprises.
Plans, assessments and roadmaps.
IT for clinics and medical groups.
Itemized pricing, no surprises.
Design, install, connect and manage every site.
Network buyer journey
Plan
A local engineer maps cabling, Wi-Fi and closets.
Network design in McHenry CountyBuild
Cabling, switching and Wi-Fi installed, tested and documented.
Network installation in McHenry CountyWi-Fi
Cisco Meraki and Cisco networks from a Cisco Select Partner.
Cisco Meraki in McHenry CountyConnect sites
SD-WAN and internet procurement for multi-site teams.
WAN services in McHenry CountyProjects
Moves, migrations and refreshes, scoped and priced.
IT projectsRun it
Infrastructure-led managed IT keeps it healthy.
IT infrastructure in McHenry CountySite walk, design and an itemized plan.
Cabling, switching and Wi-Fi installed and documented.
Connect every site securely.
Servers, cloud, Ubiquiti and Microsoft 365.
Cisco Select Partner for Meraki networks.
Start with phones, add AI when you are ready.
Communications connected journey
Start
Cloud or on-premise, installed and supported locally.
Business phones in McHenry CountyAdd AI
Answer every call, day or night.
AI receptionistRun it
Calls, chat, text and email in one engine.
Omnichannel automationGoverned AI, from first rules to a co-managed AI partner.
AI journey
No AI allowed yet
Rules and guardrails first.
AI security and governanceJust getting started
A short assessment ranks the wins.
AI opportunity assessmentAlready using AI
Visibility and control over the AI you run.
Govern your AIWant one partner to run it
A co-managed AI partner runs it with you.
Co-managed AI partnerWe do not list a Crystal Lake or McHenry office, because we do not have one. Our Chicagoland office is at 1441 Branding Ave, Suite 200, in Downers Grove, and engineers, crews and service vans leave from here. McHenry County is farther out than our inner suburb hubs, so we say so plainly. In a straight line the office is about:
| City | Distance from our office |
|---|---|
| Algonquin | 27 miles |
| Cary | 28 miles |
| Lake in the Hills | 29 miles |
| Huntley | 31 miles |
| Crystal Lake | 32 miles |
| McHenry | 37 miles |
| Johnsburg | 40 miles |
| Woodstock | 40 miles |
Most McHenry County sites are about 27 to 40 miles from our Downers Grove office in a straight line, reached by I-90, Route 31 and Randall Road. We schedule on site days with travel and site access agreed in the scope, and remote support and our 24/7 NOC/SOC cover every site around the clock.

1441 Branding Ave, Suite 200
Downers Grove, IL 60515
Office: 312-432-5300
24/7 support: 800-HELP-BTI (800-435-7284)
Monday to Friday, 8:00 AM to 5:00 PM CT
Illinois license 127.001638
McHenry County mixes established manufacturers, growing distribution buildings near I-90 and busy professional and medical offices along Route 14, Route 31 and Randall Road. Most of the sites we support here make things, move things or serve the towns around them.
Plants and shops in Crystal Lake, McHenry, Johnsburg and Woodstock need shop floor networks, restricted production zones, badge access by shift and cameras that cover docks and yards.
Warehouses and flex buildings near I-90 in Huntley and Algonquin need warehouse Wi-Fi for scanners, dock and trailer lot cameras and controlled driver entrances.
Offices in Crystal Lake, Algonquin, Cary and Lake in the Hills need secure networks, Microsoft 365, phones, cameras and badge access for single and multi-tenant buildings.
Medical groups, dental, behavioral health and pharmacy practices that need secure systems, protected records rooms and patient friendly entries.
Districts, villages, park districts and county offices in Woodstock and across McHenry County that buy through GSA or cooperative contracts.
Contractor yards, dealerships and businesses with several McHenry County and Lake County locations that want consistent credentials, video permissions and network standards.
Cameras, door controllers, phones and Wi-Fi all live on your network now. When different vendors own each piece, problems bounce between them and security gaps open where systems meet. BTI designs these systems together: cameras and doors on secured network segments, phones and Wi-Fi sized for the building and one team accountable when something breaks.
The same Downers Grove engineers and crews serve Crystal Lake, McHenry, Algonquin, Johnsburg and the rest of McHenry County.
Most issues start with remote diagnosis. Engineers, crews and replacement equipment travel from our Downers Grove office for scheduled on site days, with travel and site access agreed before work begins.
About 28 to 32 miles from our office. Manufacturers, medical groups, professional offices and retail centers along Route 14, Route 31 and Randall Road.
About 27 to 31 miles away. Industrial parks, distribution buildings and offices near the I-90 interchanges, the closest part of McHenry County to our office.
About 37 to 44 miles away. Manufacturers, machine shops, contractors and offices in the northern Fox River towns, served with planned on site days and remote support.
About 40 to 51 miles away. The county seat, public buildings, plants and schools in western and northern McHenry County get remote support right away and scheduled field work.
Barrington, Palatine, Schaumburg and the Cook County northwest suburbs are covered on the Northwest suburbs hub. Fox Lake, Wauconda and the rest of Lake County are on the Lake County hub. Elgin, Aurora and the Tri-Cities are on the Fox Valley hub, and Chicago stays on the Chicago hub.
1441 Branding Ave, Suite 200
Downers Grove, IL 60515
Office: 312-432-5300
24/7 support: 800-HELP-BTI (800-435-7284)
Monday to Friday, 8:00 AM to 5:00 PM CT
Illinois license 127.001638
BTI Communications Group, LTD. serves Chicago and the surrounding suburbs. Pick your area for local services.
Chicago and Chicagoland businesses.
Western suburb businesses, served from our Downers Grove office.
Schaumburg corridor and Cook County northwest suburb businesses, served from our Downers Grove office.
North Shore and Lake County businesses, served from our Downers Grove office.
Joliet, Bolingbrook, Romeoville and Plainfield businesses on the I-55 corridor, served from our Downers Grove office.
Aurora, Batavia, Geneva and St. Charles businesses along I-88, served from our Downers Grove office.
Hammond, Gary, Merrillville, Portage and Valparaiso businesses, served from our Downers Grove, Illinois office.
Bedford Park, McCook, Hodgkins, LaGrange and Franklin Park businesses, served from our Downers Grove office.
Crystal Lake, McHenry, Algonquin and Johnsburg businesses, served from our Downers Grove office.
Tinley Park, Chicago Heights, South Holland and Sauk Village businesses, served from our Downers Grove office.
Over 40 years of IT, security and communications work. Call 630-343-1322 for security or 312-492-2613 for IT, or book a free consultation.
Get a free consultationOur Chicagoland office and engineers are in Downers Grove, not a call center in another state. Algonquin is about 27 miles away and Crystal Lake about 32, and we plan visits around that.
IT, security, phones and cabling from one team, with one number to call.
BTI engineers across IT, networks, communications and physical security.
ISO 27001 compliant governance, independently reviewed through the TAG ISO 27001 Compliance Program.
Authorized and Certified Axis Gold Partner, Kantech Global Edition Certified Partner and Cisco Select Partner. Illinois license 127.001638.
GSA contract holder (47QTCA21D00BA). Financing at 3.99% is available for qualified buyers, subject to credit approval.
Requirements come from the site, the information you handle, contracts and the responsible authority. A product logo is not proof of compliance. Start with the industry guides below and the Chicagoland access-control building and code guide.
Accessibility, door release and emergency egress need a site-specific review against applicable ADA and fire-code requirements. These are access-control design considerations, not a claim that BTI installs fire alarm systems or that every project has the same legal obligations.
IT, security and communications built around your industry, with local examples from across McHenry County.
Each building type asks something different of its network, doors and cameras. These are the buildings we are asked about most in McHenry County.
Yes, with a project-specific design and scope. Start with the existing Chicago camera, Chicagoland access control and Chicagoland managed IT pages, then identify the systems that need to work together. New installations, network work and migrations are planned around actual site access and operating requirements.
Give BTI the location, system brand, model, administrator ownership and the fault you are seeing. We review the problem and agree on remote troubleshooting, field work and any parts or licensing needed. Physical security support and managed IT support have different scopes; choose the one covering the affected system.
Maintenance is planned work such as checking equipment, reviewing settings or scheduling updates. Support handles a question or fault. Management assigns continuing ownership of users, permissions, health checks, documentation and renewals. Agree the tasks and responsibilities rather than treating those words as interchangeable. See surveillance maintenance and physical security service plans.
A system review determines what can stay. Share the equipment inventory, administrator access, licenses, support agreement and known problems before replacing anything. BTI can plan a change from another integrator or IT provider with defined handover responsibilities. Read switching security system support and switching IT providers.
Monitoring checks agreed events or system-health signals. Management determines who reviews them and who owns settings, users, escalation and follow-up. 24/7 system health and alert monitoring available, plus a 24/7 converged security NOC/SOC. Live video review, alarm escalation, remote support and an on-site visit are distinct scopes. Confirm coverage, hours and authority in the service agreement.
Compare the same locations, users, doors, cameras, licensing, retention, installation, training and ongoing service responsibilities. Ask which work stays with your internal team, which costs recur and what is excluded. Use the six-step journey and request an itemized consultation rather than comparing unexplained totals.
No. The local office and city-coverage sections on this page state the real delivery base and travel considerations. A region name describes the sites served, not a new branch. Remote support arrangements and physical attendance are different commitments and should be defined for each address.
No Crystal Lake or McHenry office. Our Chicagoland office is at 1441 Branding Ave, Suite 200, Downers Grove, IL 60515, about 27 miles from Algonquin and 32 from Crystal Lake. Call 312-432-5300.
Yes. BTI Communications Group, LTD. provides managed IT, cybersecurity, security cameras, access control and business phones across McHenry County from our Downers Grove office, with a 24/7 NOC/SOC and over 40 years in business.
Yes. Those are among the McHenry County cities we serve most, along with Johnsburg, Lake in the Hills, Cary, Huntley and Woodstock.
BTI Communications Group, LTD. installs and services commercial access control across McHenry County, including card, fob and mobile door access, gates, dock doors and visitor entry. We work with Brivo, Avigilon Alta, Kantech, Software House C-CURE, RS2 and Axis, and we can take over an existing system. Call 630-343-1322 for a free site walk.
BTI is an Authorized and Certified Axis Gold Partner and a Kantech Global Edition Certified Partner. We also design, install and support Avigilon, Avigilon Alta, Brivo, Eagle Eye, Software House C-CURE, Milestone XProtect as a Milestone Advanced Partner, exacqVision, OpenEye, Bosch and Alarm.com systems, and Cisco Meraki networks as a Cisco Select Partner. See all the brands we install.
It depends on the number of doors and cameras, cabling, video storage, software licensing and whether existing wiring and hardware can be reused. BTI walks the site at no cost and gives you a written, itemized quote. Qualified buyers can finance hardware and projects at 3.99%, subject to credit approval.
A security systems integrator designs, installs and connects cameras, access control, alarms and intercoms so they run as one system, then supports it. BTI also runs the network and IT those systems depend on, so one team owns the whole site.
Most commercial systems are on-premise and server based (such as Kantech EntraPass, Software House C-CURE and RS2), cloud based (such as Brivo and Avigilon Alta) or a hybrid of both. Doors can open with cards, fobs, mobile credentials, PIN codes or biometrics.
Axis Communications is a Swedish company and Avigilon is part of Motorola Solutions, a US company. Both are camera lines BTI designs and installs, and we confirm the details of every model on your quote.
Most managed IT plans are a fixed monthly fee per user or per device. The price depends on the number of users, devices, sites and locations, the security tools included and the support hours you need. See how our managed IT pricing works, or ask for a free assessment.
Crystal Lake, McHenry, Algonquin, Johnsburg, Lake in the Hills, Cary, Huntley, Woodstock, Spring Grove, Marengo, Harvard and the rest of McHenry County.
Yes. We design shop floor networks, restricted production zones, badge access by shift and dock and yard cameras for plants, and we plan installs around production schedules.
McHenry County sites are about 27 to 40 miles from our Downers Grove office, so we schedule on site days and agree on travel in the scope. Remote support starts right away.
Managed IT, cybersecurity, security cameras, access control, business phones, network cabling and IT projects, from one team.
Yes. Many clients use BTI for managed IT and cybersecurity along with cameras, access control and phones, so one team understands the whole site.
Barrington and the Cook County northwest suburbs are covered on our Northwest suburbs hub. Elgin and the Fox Valley are on our Fox Valley hub. This page covers McHenry County.
Yes. BTI holds GSA contract 47QTCA21D00BA. Ask about cooperative purchasing options during your consultation.
Yes. Qualified buyers can finance hardware and projects at 3.99%, subject to credit approval.
Request a free consultation. An engineer reviews your goals and current systems, and you receive a written scope with clear next steps.
100% financing for parts, labor and licensing at 3.99% for five years
Tell us about your IT, security or communications needs. No obligation.