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Our Story
Established in 1968, GLS has set the mark for excellence in the electrical, technology and security construction and services industry. While our target market is Long Island, we are able to perform services through the NY Metro Region to service our key client needs.
Our story continues as we pioneer innovation in the electrical, technology and security industries. GLS looks forward to continuing to offer leading edge solutions to light up Long Island and New York for many years to come.
Commercial Experience
Hospital / Nursing Home
Laboratory
Mixed Use
Parking Garage
School / College / University
Apartments & Condominiums
Arena / Stadium
Assisted Living
Athletic Field
Auto Dealership / Service
Bank
Casinos
Church / Synagogue
City / Town Hall
Civil & Site Development
Club House / Community Center
Court House
Data Centers - Mission Critical
Design Build
Education (K-12)
Fire / Police Station
Fitness Center
Gas Station
Golf Course
Government
Grocery Stores
Hotel / Motel
House
Jail / Prison
Library
Lighting Retrofits
Manufacturing Plant
Marine
Medical Office
Military
Misc Project
Museum
Non-Building Construction
Non-Residential Building
Office Building
Park / Playground
Parking Lots
Post Office
Pre-Manufactured Structures
Radio / Television Station
Residential Building
Restaurant
Retail Store
Secure and Shielded Facilities
Sewage / Water Treatment Plant
Single Family Residential
Storage Facility / Warehouse
Swimming Pool
Tennis Court
Terminal - Airport / Bus / Railroad
Theater
Theme Park
Utilities
Project Experience - Featured Projects
Regions & Counties Serviced
- New York City, Long Island and Hudson Valley
New York 2
- Nassau
- Suffolk
Our CSI Codes
23 22 13.13 - Underground Steam and Condensate Heating Piping
25 05 26 - Grounding and Bonding for Integrated Automation
26 01 10 - Operation and Maintenance of Medium-Voltage Electrical Distribution
26 01 20 - Operation and Maintenance of Low-Voltage Electrical Distribution
26 05 43 - Underground Ducts and Raceways for Electrical Systems
26 06 10 - Schedules for Medium-Voltage Electrical Distribution
26 06 20 - Schedules for Low-Voltage Electrical Distribution
26 06 20.26 - Wiring Device Schedule
26 10 00.00.01 - Medium-Voltage Electrical Distribution
26 18 13 - Medium-Voltage Cutouts
26 20 00.00.01 - Low-Voltage Electrical Distribution
26 21 00.00.01 - Low-Voltage Overhead Electrical Power Systems
26 43 13 - Transient-Voltage Suppression for Low-Voltage Electrical Power Circuits
27 01 10 - Operation and Maintenance of Structured Cabling and Enclosures
27 01 20 - Operation and Maintenance of Data Communications
27 05 13.23 - T1 Services
27 05 13.33 - DSL Services
27 05 13.43 - Cable Services
27 05 26 - Grounding and Bonding for Communications Systems
27 05 28 - Pathways for Communications Systems
27 06 10 - Schedules for Structured Cabling and Enclosures
27 06 20 - Schedules for Data Communications
27 06 30 - Schedules for Voice Communications
27 10 00.00.01 - Structured Cabling
27 11 23 - Communications Cable Management and Ladder Rack
27 13 13.13 - Communications Copper Cable Splicing and Terminations
27 13 23 - Communications Optical Fiber Backbone Cabling
27 13 23.13 - Communications Optical Fiber Splicing and Terminations
27 13 33 - Communications Coaxial Backbone Cabling
27 13 33.13 - Communications Coaxial Splicing and Terminations
27 13 43 - Communications Services Cabling
27 13 43.23 - T1 Services Cabling
27 13 43.33 - DSL Services Cabling
27 13 43.43 - Cable Services Cabling
27 15 00.16 - Voice Communications Horizontal Cabling
27 15 00.19 - Data Communications Horizontal Cabling
27 15 00.49 - Intermediate Frequency/Radio Frequency Communications Horizontal Cabling
27 15 13 - Communications Copper Horizontal Cabling
27 15 23 - Communications Optical Fiber Horizontal Cabling
27 15 33 - Communications Coaxial Horizontal Cabling
27 21 13 - Data Communications Firewalls
28 01 10 - Operation and Maintenance of Electronic Access Control and Intrusion Detection
28 01 10.51 - Maintenance and Administration of Electronic Access Control and Intrusion Detection
28 01 10.71 - Revisions and Upgrades of Electronic Access Control and Intrusion Detection
28 01 20 - Operation and Maintenance of Electronic Surveillance
28 01 30 - Operation and Maintenance of Electronic Detection and Alarm
28 01 30.51 - Maintenance and Administration of Electronic Detection and Alarm
28 01 30.71 - Revisions and Upgrades of Electronic Detection and Alarm
28 01 40 - Operation and Maintenance of Electronic Monitoring and Control
28 01 40.51 - Maintenance and Administration of Electronic Monitoring and Control
28 01 40.71 - Revisions and Upgrades of Electronic Monitoring and Control
28 05 13 - Conductors and Cables for Electronic Safety and Security
28 05 13.13 - CCTV Communications Conductors and Cables
28 05 13.16 - Access Control Communications Conductors and Cables
28 05 13.19 - Intrusion Detection Communications Conductors and Cables
28 05 13.23 - Fire Alarm Communications Conductors and Cables
28 05 26 - Grounding and Bonding for Electronic Safety and Security
28 05 28 - Pathways for Electronic Safety and Security
28 05 28.29 - Hangers and Supports for Electronic Safety and Security
28 05 28.33 - Conduits and Backboxes for Electronic Safety and Security
28 05 28.36 - Cable Trays for Electronic Safety and Security
28 05 28.39 - Surface Raceways for Electronic Safety and Security
28 05 48 - Vibration and Seismic Controls for Electronic Safety and Security
28 05 53 - Identification for Electronic Safety and Security
28 06 10 - Schedules for Electronic Access Control and Intrusion Detection
28 06 20 - Schedules for Electronic Surveillance
28 06 30 - Schedules for Electronic Detection and Alarm
28 06 40 - Schedules for Electronic Monitoring and Control
28 08 00.00.01 - Commissioning of Electronic Safety and Security
28 10 00.00.01 - Electronic Access Control and Intrusion Detection
28 13 13 - Access Control Global Applications
28 13 16 - Access Control Systems and Database Management
28 13 19 - Access Control Systems Infrastructure
28 13 26 - Access Control Remote Devices
28 13 33 - Access Control Interfaces
28 13 33.16 - Access Control Interfaces to Access Control Hardware
28 13 33.26 - Access Control Interfaces to Intrusion Detection
28 13 33.33 - Access Control Interfaces to Video Surveillance
28 13 33.36 - Access Control Interfaces to Fire Alarm
28 13 43 - Access Control Identification Management Systems
28 13 53 - Security Access Detection
28 13 53.13 - Security Access Metal Detectors
28 13 53.16 - Security Access X-Ray Equipment
28 13 53.23 - Security Access Explosive Detection Equipment
28 13 53.29 - Security Access Sniffing Equipment
28 16 13 - Intrusion Detection Control, GUI, and Logic Systems
28 16 16 - Intrusion Detection Systems Infrastructure
28 16 19 - Intrusion Detection Remote Devices and Sensors
28 16 33 - Intrusion Detection Interfaces
28 16 33.13 - Intrusion Detection Interfaces to Remote Monitoring
28 16 33.16 - Intrusion Detection Interfaces to Access Control Hardware
28 16 33.23 - Intrusion Detection Interfaces to Access Control System
28 16 33.33 - Intrusion Detection Interfaces to Video Surveillance
28 16 33.36 - Intrusion Detection Interfaces to Fire Alarm
28 16 43 - Perimeter Security Systems
28 16 46 - Intrusion Detection Vehicle Control Systems
28 20 00.00.01 - Electronic Surveillance
28 23 13 - Video Surveillance Control and Management Systems
28 23 16 - Video Surveillance Monitoring and Supervisory Interfaces
28 23 19 - Digital Video Recorders and Analog Recording Devices
28 23 23 - Video Surveillance Systems Infrastructure
28 23 26 - Video Surveillance Remote Positioning Equipment
28 23 29 - Video Surveillance Remote Devices and Sensors
28 26 13 - Electronic Personal Safety Detection Systems
28 26 16 - Electronic Personal Safety Alarm Annunciation and Control Systems
28 26 19 - Electronic Personal Safety Interfaces to Remote Monitoring
28 26 23 - Electronic Personal Safety Emergency Aid Devices
28 30 00.00.01 - Electronic Detection and Alarm
28 31 13 - Fire Detection and Alarm Control, GUI, and Logic Systems
28 31 23 - Fire Detection and Alarm Annunciation Panels and Fire Stations
28 31 33 - Fire Detection and Alarm Interfaces
28 31 33.13 - Fire Detection and Alarm Interfaces to Remote Monitoring
28 31 33.16 - Fire Detection and Alarm Interfaces to Access Control Hardware
28 31 33.23 - Fire Detection and Alarm Interfaces to Access Control System
28 31 33.26 - Fire Detection and Alarm Interfaces to Intrusion Detection
28 31 33.33 - Fire Detection and Alarm Interfaces to Video Surveillance
28 31 33.43 - Fire Detection and Alarm Interfaces to Elevator Control
28 31 43 - Fire Detection Sensors
28 31 46 - Smoke Detection Sensors
28 31 49 - Carbon-Monoxide Detection Sensors
28 31 53 - Fire Alarm Initiating Devices
28 31 53.13 - Fire Alarm Pull Stations
28 31 53.23 - Fire Alarm Level Detectors Switches
28 31 53.33 - Fire Alarm Flow Switches
28 31 53.43 - Fire Alarm Pressure Sensors
28 31 63 - Fire Alarm Integrated Audio Visual Evacuation Systems
28 31 63.13 - Fire Alarm Horns and Strobes
28 40 00.00.01 - Electronic Monitoring and Control
28 46 13 - Hard-Wired Detention Monitoring and Control Systems
28 46 16 - Relay-Logic Detention Monitoring and Control Systems
28 46 19 - PLC Electronic Detention Monitoring and Control Systems
28 46 23 - Computer-Based Detention Monitoring and Control Systems
28 46 26 - Discreet-Logic Detention Monitoring and Control Systems
28 46 29 - Discreet-Distributed Intelligence Detention Monitoring and Control Systems
31 21 16.13 - Methane Venting
31 63 29.16 - Cased Drilled Concrete Piers
33 01 60 - Operation and Maintenance of Hydronic and Steam Energy Utilities
33 01 70 - Operation and Maintenance of Electrical Utilities
33 01 80 - Operation and Maintenance of Communications Utilities
33 06 10 - Schedules for Water Utilities
33 06 40 - Schedules for Storm Drainage Utilities
33 06 60 - Schedules for Hydronic and Steam Energy Utilities
33 06 70 - Schedules for Electrical Utilities
33 09 40 - Instrumentation and Control for Storm Drainage Utilities
33 09 60 - Instrumentation and Control for Hydronic and Steam Energy Utilities
33 09 70 - Instrumentation and Control for Electrical Utilities
33 11 16 - Site Water Utility Distribution Piping
33 29 00.00.01 - Well Abandonment
33 33 13 - Sanitary Utility Sewerage
33 33 16 - Combined Utility Sewerage
33 34 13 - Sanitary Utility Sewerage Inverted Siphons
33 41 13 - Public Storm Utility Drainage Piping
33 50 00.00.01 - Fuel Distribution Utilities
33 51 13 - Natural-Gas Piping
33 60 00.00.01 - Hydronic and Steam Energy Utilities
33 61 13 - Underground Hydronic Energy Distribution
33 61 23 - Aboveground Hydronic Energy Distribution
33 63 13 - Underground Steam and Condensate Distribution Piping
33 70 00.00.01 - Electrical Utilities
33 71 19 - Electrical Underground Ducts and Manholes
33 71 36 - Extra-High-Voltage Wiring
33 71 36.13 - Overhead Extra-High-Voltage Wiring
33 71 39 - High-Voltage Wiring
33 71 39.13 - Overhead High-Voltage Wiring
33 71 39.23 - Underground High-Voltage Wiring
33 71 49 - Medium-Voltage Wiring
33 71 49.13 - Overhead Medium-Voltage Wiring
33 71 49.23 - Underground Medium-Voltage Wiring
33 79 19 - Utilities Grounding
33 79 19.13 - Electrical Utilities Grounding
33 79 19.16 - Communications Utilities Grounding
33 81 23 - Aerial Cable Installation Hardware
33 82 13 - Copper Communications Distribution Cabling
33 82 13.13 - Copper Splicing and Terminations
33 82 23 - Optical Fiber Communications Distribution Cabling
33 82 23.13 - Optical Fiber Splicing and Terminations
33 82 33 - Coaxial Communications Distribution Cabling
33 82 33.13 - Coaxial Splicing and Terminations
34 21 16 - Traction Power Substations
34 21 16.13 - AC Traction Power Substations
34 21 16.16 - DC Traction Power Substations
40 23 36 - Sanitary Water Process Piping
40 95 33.13 - Cabled Process Control Networks
40 95 33.23 - Fiber Optic Process Control Networks
40 95 33.33 - Wireless Process Control Networks
40 95 73 - Process Control Wiring
Associations & Memberships
NFPA (National Fire Protection Assn.)
Suffolk County Electrical Contractors Assn.
New York State Assn. of Electrical Contractors
LIAA (Long Island Alarm Assn.)
BICSI/RCDD (Registered Communications Distribution Designer)
LETIP International
ACE Mentor Program (Architecture, Construction, Engineering)
AFE (Assn. for Facilities Engineering)
BICSI (Building Industry Consulting Service International)
HIA (Hauppauge Industrial Assn.)
IEEE (Institute of Electrical & Electronic Engineers)
LIBI (Long Island Builders Institute)
NAHB (National Assn. of Home Builders)
NECA (National Electrical Contractors Assn.)
NHBA (National Hispanic Business Assn.)
USGBC (United States Green Building Council)
ASIS International (American Society for Industrial Security)
ASES (American Solar Energy Society)
Nassau Electric League
International Assn. for Cabling Professionals
Preferred Brands
Ademco Security Products
Belden Wire & Cable Products
Berk-Tek
Bosch
Commscope
Focus Industries
Hubbell
Leviton
March Manufacturing Inc.
Mohawk Flooring
Nordx/CDT
Optical Cable Corporation
Ortronics
Panduit
Siemon
Silent Knight
Superior Essex
Systimax
TE Connectivity
Tyco Electronics
Uniprise Solutions
Verint
