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Our Story
Semetra, is a Market Leader in Technology / Electrical industry, we are a Full Turnkey Technology Solutions Company based in Corona, California. Semetra was founded in 2001 by Mondo Marshall, the current CEO/President. Mr. Marshall has 35 years in the Electrical and Technology industry which he utilizes to guide a dedicated staff in a multi-location company.
Semetra's team has paved the way with Cutting Edge Technology Solutions that set Semetra apart from its competitors. Innovative automation solutions provide distinct direction for our clients, meeting every expectation, schedule, budget and goals to make sure all our clients are successful. Mondo and his team have worked on major projects that have provided the experience necessary to push the technology envelope of integration and security solutions allowing our clients to manage and operate their facilities easier.
Semetra has a presence throughout the Western Region covering all of California.
The growth and sustainability of Semetra is only possible with our “No Excuse” mindset that provides Structure and Customer Service to all our clients, partners and vendors. We never leave a client in distress by providing exceptional service that allows us to maintain our partnership with each customer which has market our position in the Technology industry for more than a decade.
Commercial Experience
Office Building
Animal Hospital / Kennel
Apartments & Condominiums
Arena / Stadium
Assisted Living
Bank
Casinos
Church / Synagogue
City / Town Hall
Court House
Data Centers - Mission Critical
Design Build
Education (K-12)
Fire / Police Station
Fitness Center
Golf Course
Government
Grocery Stores
Hospital / Nursing Home
Hotel / Motel
Jail / Prison
Manufacturing Plant
Medical Office
Military
Mixed Use
Post Office
Radio / Television Station
Restaurant
School / College / University
Theater
Regions & Counties Serviced
- California-Los Angeles and Vicinity
- Orange, Riverside and San Bernardino Counties
- San Diego and Imperial Counties
California 4
- Los Angeles
- Orange
- Riverside
- San Bernardino
Our CSI Codes
01 21 43 - Time Allowances
08 01 74 - Operation and Maintenance of Access Control Hardware
08 74 19 - Biometric Identity Access Control Hardware
25 05 28 - Pathways for Integrated Automation
25 05 28.29 - Hangers and Supports for Integrated Automation
25 05 28.39 - Surface Raceways for Integrated Automation
25 14 13 - Integrated Automation Remote Control Panels
25 14 16 - Integrated Automation Application-Specific Control Panels
25 14 19 - Integrated Automation Terminal Control Units
25 14 23 - Integrated Automation Field Equipment Panels
25 36 13 - Integrated Automation Power Meters
25 36 23 - Integrated Automation Battery Monitors
25 36 26 - Integrated Automation Lighting Relays
25 36 29 - Integrated Automation UPS Monitors
25 58 00.00.01 - Integrated Automation Control of Electronic Safety and Security Systems
25 98 00.00.01 - Integrated Automation Control Sequences for Electronic Safety and Security Systems
26 05 13.13 - Medium-Voltage Open Conductors
26 05 26 - Grounding and Bonding for Electrical Systems
26 05 29 - Hangers and Supports for Electrical Systems
26 05 33 - Raceway and Boxes for Electrical Systems
26 05 36 - Cable Trays for Electrical Systems
26 05 39 - Underfloor Raceways for Electrical Systems
26 05 48 - Vibration and Seismic Controls for Electrical Systems
26 05 53 - Identification for Electrical Systems
26 09 26 - Lighting Control Panelboards
26 09 33 - Central Dimming Controls
26 09 33.13 - Multichannel Remote-Controlled Dimmers
26 09 33.16 - Remote-Controlled Dimming Stations
26 13 13 - Medium-Voltage Circuit Breaker Switchgear
26 13 16 - Medium-Voltage Fusible Interrupter Switchgear
26 13 19 - Medium-Voltage Vacuum Interrupter Switchgear
26 18 16 - Medium-Voltage Fuses
26 18 19 - Medium-Voltage Lightning Arresters
26 18 23 - Medium-Voltage Surge Arresters
26 18 26 - Medium-Voltage Reclosers
26 18 29 - Medium-Voltage Enclosed Bus
26 18 33 - Medium-Voltage Enclosed Fuse Cutouts
26 18 36 - Medium-Voltage Enclosed Fuses
26 18 39 - Medium-Voltage Motor Controllers
26 22 13 - Low-Voltage Distribution Transformers
26 22 16 - Low-Voltage Buck-Boost Transformers
26 22 19 - Control and Signal Transformers
26 23 13 - Paralleling Low-Voltage Switchgear
26 24 16 - Panelboards
26 25 00.00.01 - Enclosed Bus Assemblies
26 27 16 - Electrical Cabinets and Enclosures
26 27 19 - Multi-Outlet Assemblies
26 27 23 - Indoor Service Poles
26 27 26 - Wiring Devices
26 28 13 - Fuses
26 28 16 - Enclosed Switches and Circuit Breakers
26 29 13 - Enclosed Controllers
26 29 13.13 - Across-the-Line Motor Controllers
26 29 13.16 - Reduced-Voltage Motor Controllers
26 29 23 - Variable-Frequency Motor Controllers
26 33 13 - Batteries
26 33 19 - Battery Units
26 36 13 - Manual Transfer Switches
26 36 23 - Automatic Transfer Switches
27 01 40 - Operation and Maintenance of Audio-Video Communications
27 05 28.29 - Hangers and Supports for Communications Systems
27 05 28.36 - Cable Trays for Communications Systems
27 05 28.39 - Surface Raceways for Communications Systems
27 05 43 - Underground Ducts and Raceways for Communications Systems
27 06 40 - Schedules for Audio-Video Communications
27 11 13 - Communications Entrance Protection
27 11 19 - Communications Termination Blocks and Patch Panels
27 11 26 - Communications Rack Mounted Power Protection and Power Strips
27 15 00.23 - Audio-Video Communications Horizontal Cabling
27 15 43 - Communications Faceplates and Connectors
27 16 16 - Communications Media Converters, Adapters, and Transceivers
27 21 29 - Data Communications Switches and Hubs
27 21 33 - Data Communications Wireless Access Points
27 24 23 - Audio-Video Devices
27 40 00.00.01 - Audio-Video Communications
27 41 13 - Architecturally Integrated Audio-Video Equipment
27 41 16 - Integrated Audio-Video Systems and Equipment
27 41 16.25 - Integrated Audio-Video Systems and Equipment for Restaurants and Bars
27 41 16.28 - Integrated Audio-Video Systems and Equipment for Conference Rooms
27 41 16.29 - Integrated Audio-Video Systems and Equipment for Board Rooms
27 41 16.51 - Integrated Audio-Video Systems and Equipment for Classrooms
27 41 16.61 - Integrated Audio-Video Systems and Equipment for Theaters
27 41 16.62 - Integrated Audio-Video Systems and Equipment for Auditoriums
27 41 16.63 - Integrated Audio-Video Systems and Equipment for Stadiums and Arenas
27 41 19 - Portable Audio-Video Equipment
27 41 23 - Audio-Video Accessories
27 41 16.00.01 - Integrated Audio-Video Systems and Equipment
27 51 00.00.01 - Distributed Audio-Video Communications Systems
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 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 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 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 33.36 - Access Control Interfaces to Fire Alarm
28 13 43 - Access Control Identification Management Systems
28 13 53 - Security Access Detection
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 33.13 - 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 26 13 - Electronic Personal Safety Detection Systems
33 77 13 - Air Medium-Voltage Circuit Breaker
33 77 16 - Oil Medium-Voltage Circuit Breaker
33 77 19 - Gas Medium-Voltage Circuit Breaker
33 77 23 - Vacuum Medium-Voltage Circuit Breaker
33 77 26 - Medium-Voltage Utility Fusible Interrupter Switchgear
33 77 33 - Medium-Voltage Utility Cutouts
33 77 36 - Medium-Voltage Utility Fuses
33 77 39 - Medium-Voltage Utility Surge Arresters
33 77 53 - Medium-Voltage Utility Reclosers
