# Gemellaro Systems Integration (GSI) > Official Gemellaro Systems Integration (GSI) business agent. Gemellaro Systems Integration (GSI) is a Southeast Michigan based systems integrator that… ## Ask it a question Gemellaro Systems Integration (GSI) answers for itself at https://api.hailera.com/mcp/securityandnetworks. A client that speaks MCP can connect to that address; the tool is ask_securityandnetworks and the protocol is 2026-07-28. Where this file and the agent disagree, the agent is current. ## About Gemellaro Systems Integration (GSI) The About Us page gives a dated company history. It begins in 1990, when "G&S Communications Services is established as a division of G&S Electric", with a Security Division added in 1992 installing CCTV, access control and alarm systems. The timeline records BICSI membership in 1993 and the addition of an RCDD (Registered Communications Distribution Designer) accredited Project Manager/Designer the same year, a rebrand to G&S Integration in 1994, and a security designer attaining the Certified Protection Professional (CPP) designation from ASIS in 1998. In 2004, per the timeline, "G&SI managers buy the division from G&S Electric and reincorporate it as Gemellaro Systems Integration (GSI)". Later entries record adding Managed Services in 2010, IP video surveillance in 2011, opening a branch in Dearborn, Michigan and opening Gemsys Mexico in 2016, and acquiring Wiltec Technologies and launching the Ann Arbor branch in 2019. The timeline also records reaching 100 employees in 2019, 150 employees in 2021 and a service fleet of 65 vehicles in 2021. On recognition, the page says GSI "ranks yearly on sdm top system integrators report" and lists annual placements in the Security Dealer Magazine Top Systems Integrator report from 2009 onward, including 17th in 2022. It also states GSI was "awarded top workplaces 2022, 2023, and 2024 by detroit free press". The page describes a safety culture and community giving, but publishes no licence numbers, insurance details or hours. It carries no prices, pricing or cost information; the page directs readers to "Contact us Today" for services, a quote or an estimate. Source: https://securityandnetworks.com/about-us/ ## Where Gemellaro Systems Integration (GSI) works GSI publishes two office locations. The headquarters address is 1055 W Square Lake Road, Troy MI 48098, with telephone 248-585-5535. A second office is located at 5840 Interface Drive, Suite 300, Ann Arbor, MI 48103; no separate phone number is published for the Ann Arbor address. An email address is shown on the Contact Us page but it is obscured on the live page, so the phone number and the contact form are the reliable routes. The company history page notes "2016 GSI opens branch in Dearborn, Michigan", but no Dearborn address or phone number is published anywhere on the site. On area and areas served, the home page describes a "Southeast Michigan based team" working "across the country". The Our Reach page says GSI "is fortunate to continually service hundreds of locations around the world" and lists countries including the United States, Canada, Mexico, Argentina, Austria, Colombia, France, Germany, Netherlands, Poland, Puerto Rico, Spain, the United Kingdom and Venezuela, and US states including Michigan, Ohio, Illinois, Indiana, Texas, California, New York and many others. The site publishes no opening hours, so there is no confirmation of when the offices are open. There is no online booking, appointment or scheduling tool. To contact GSI, request a quote or estimate, ask about cost or pricing, or schedule a consultation, call 248-585-5535 or submit the form on the Contact Us page, which asks for name, email, phone number and a message. The website publishes no prices, price list, rates, fees or contract terms for any service. Lists Ann Arbor, Dearborn, Troy, Elko, and Issaquah as a location. Names California, Illinois, Indiana, Michigan, New York, Ohio, Texas, and United States as a service area. Areas beyond these are not published. Source: https://securityandnetworks.com/contact-us/ ## Managed services and ongoing support from GSI GSI's Managed Services page offers ongoing support plans to existing and new clients, described as "a wide range of plans specifically designed for your organization's needs". The page says these offerings "include, but are not limited to, application administration/management/monitoring, physical and virtual server administration, application version upgrades, application software/database migrations, as well as a complete overall system administration and management option". The page also states that where physical security equipment fails, "the managed services team assigned to your organization is quickly able to identify, troubleshoot, and repair the issue or if needed, rapidly dispatch a service technician". No response time, service level agreement, coverage window or guaranteed timeframe is published, and the site does not say whether support is available outside business hours. For organisations "seeking an administration and or management option for card access, intrusion, or IP surveillance systems", the page says GSI "is able to provide a tailored solution". The home page adds that managed services let clients "manage and maintain security systems as an integrated part of your team". Because plans are described as tailored, the website publishes no prices, pricing, monitoring fees, rates, monthly cost or contract terms for managed services, and no standard plan tiers. To ask what a managed services plan would cost, to get a quote or estimate, or to schedule a discussion, contact GSI on 248-585-5535 or use the contact form on the Contact Us page. No hours are published and there is no online booking or appointment tool. Source: https://securityandnetworks.com/managed-servcies/ ## Network, ICT infrastructure, AV and building technology services Alongside physical security, GSI publishes several technology infrastructure service lines. Information and Communications Technology (ICT) Infrastructure: the page says GSI's ICT experts "start with a collaborative discovery process" and "assess your facility or planning documents to design a smart, scalable solution - one that aligns with your budget". Listed services are Data Infrastructure, Fiber and Copper Backbone, Data Center Build Out, and Wireless Solutions. The page says GSI works on projects ranging from "a 50-person office" to "a multi-campus enterprise with miles of fiber". Network Security and Technology Systems Design: listed services are Systems Design/Engineering, Low Voltage Cabling, Division Specification Development, CAD Services, and Customer Design Representation. The page invites readers to "Contact GSI today to schedule a consultation". Building Technologies and Infrastructure Solutions: the page describes a "core focus on high-performance cabling and network systems" with expertise in "structured cabling, fiber optics, and network integration". Listed items include Space Utilization and Spatial Analytics, Environmental (Air) Quality Sensors, Emergency Responder Radio Communication System (ERRCS), and Building Controls Cabling. AV design and installation for "huddle spaces, conference rooms, classrooms, or auditoriums", with listed offerings including Intelligent Conference Rooms, Seamless Video Conferencing, Digital Signage, Video Walls, Overhead Paging and Sound Masking. None of these pages publishes prices, pricing, rates, fees, cost estimates or project timelines. For a quote or estimate, the site routes visitors to the contact form or the phone number 248-585-5535. Source: https://securityandnetworks.com/information-and-communications-technology-ict-infrastructure/ ## Security systems services listed by GSI The Security Systems Solutions page describes GSI's work as "the design, deployment, and maintenance of physical security systems", serving "clients across Southeast Michigan and beyond". The page says the team remains "manufacturer agnostic - allowing our team to focus on value engineering and selecting the right hardware at the right price for each unique environment". Under the heading Security System Services, the page lists these offerings by name: IP Video Surveillance; Access Control; Intrusion Detection and Monitoring; Systems Integration; Biometrics; Perimeter Protection; Command Centers; Electrified Door Hardware; Security Entrance (described as turnstiles, security portals and barrier systems); Intercom; AI-Driven Security; and Blue Light Emergency Call Box. On credentials, the page states that "GSI's senior designer/estimator holds the Certified Protection Professional (CPP) credential - an ASIS-sponsored certification". No Michigan security system contractor licence number, insurance details, monitoring-centre listing, response time or monitoring time is published anywhere on the pages read, and the site makes no claim about how quickly an alarm or event is handled. Questions of that kind should go to the company directly. The page publishes no prices, pricing, rates, fees, packages or cost ranges for any security service, and no contract or monitoring terms. Anyone who needs a price, quote or estimate, or who wants to book a site consultation, is directed to contact GSI on 248-585-5535 or through the contact form. No hours of operation and no online booking or appointment scheduler are published. Source: https://securityandnetworks.com/security-systems-solutions/ ## What Gemellaro Systems Integration (GSI) has not published yet These are things people ask Gemellaro Systems Integration (GSI) that its published information does not yet cover. - prices, rates and monitoring fees - service availability, response times and monitoring times - contract terms, cancellation policies and minimum commitment - licences, permits and registration numbers - insurance coverage and bonding details - manufacturer partnerships and specific product brands - warranty terms, guarantees and service level agreements - project timelines, start dates and firm completion dates Ask anyway — the agent will say plainly that it is not published rather than guess. ## Where this comes from https://www.securityandnetworks.com