Discover the energy-saving potential of your lobby. Learn how to meet energy codes and reduce energy waste with our tailored solutions.

Transform Your Lobby into an Energy-Efficient Space

The lobby is often the first point of contact for visitors and employees in a commercial building. It’s a space that needs to be well-lit and welcoming at all times. It’s a bustling area, filled with people coming and going at all hours. The lighting in these areas is typically high-intensity and left on for extended periods, leading to significant energy consumption.

Traditional lighting systems in lobbies are often manually controlled, resulting in lights being left on unnecessarily when the space is unoccupied, leading to high energy waste. Moreover, the diverse activities and varying occupancy levels in lobbies make it challenging to manage lighting efficiently. This not only increases operational costs but also contributes to a larger carbon footprint.

To address these issues, occupancy sensors offer an effective solution. These devices can automatically turn off or dim the lights when the lobby is vacant, significantly reducing energy consumption. Rayzeek’s range of occupancy sensors, including wall and ceiling-mounted options, provide a tailored solution for lobbies, ensuring efficient lighting control without compromising on comfort or safety.

Meet the Energy Codes

The International Energy Conservation Code (IECC) is a model code developed by the International Code Council (ICC) to establish minimum design and construction requirements for energy efficiency in buildings. The IECC is updated every three years to incorporate the latest in energy conservation practices and technologies.

IECC, Why You Should Care

IECC is widely adopted by states and municipalities across the United States. IECC covers various aspects of energy use, including the building envelope (walls, roofs, and windows), heating and cooling systems, and lighting systems.

IECC mandates specific lighting controls, such as occupancy sensors, to minimize energy wastage in unoccupied spaces in various areas.

ANSI/ASHRAE/IES Standard 90.1, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings, is a widely recognized energy standard published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

ASHRAE 90.1, Why You Should Care

ASHRAE 90.1 is used as a benchmark for building energy codes across the United States and serves as a compliance path within the IECC which outlines minimum requirements for the energy-efficient performance of commercial buildings’ components including building envelopes, HVAC systems, water heating systems, and lighting systems.

ASHRAE 90.1 standard specifies maximum allowable lighting power densities and minimum lighting control requirements, including the use of occupancy sensors in specific areas.

Title 24, part 6 of the California Building Standards Code, officially known as the Building Energy Efficiency Standards for Residential and Nonresidential Buildings, Title 24 is administered by the California Energy Commission and is updated periodically to reflect new energy efficiency technologies and methods.

Title 24, Why You Should Care

Title 24 is known for its rigorous requirements, often considered more stringent than those found in many other energy codes across the United States. Title 24 mandates strict energy performance standards for all aspects of building construction, which includes heating, ventilation, air conditioning (HVAC), water heating, and lighting.

Title 24 requires the installation of occupancy sensors that adjust lighting based on room occupancy in specific areas of commercial buildings to ensure that energy is not wasted.

Energy Code Adoption by State

Expand to see the detailed table ↓

StateCurrent Commercial CodeCommercial Code Efficiency Category
AlaskaNone statewideNo statewide code
ArizonaHome rule<90.1-2007
Arkansas2009 IECC and 90.1-200790.1-2007
California2022 Building Energy Efficiency Standards90.1-2019
ColoradoHome ruleNo statewide code
Connecticut2021 IECC and 90.1-201990.1-2019
Delaware2018 IECC and 90.1-201690.1-2013
District of Columbia90.1-2013^90.1-2019
Florida2021 IECC and 90.1-2019^90.1-2016
Georgia2015 IECC and 90.1-2013^90.1-2013
HawaiiHome rule90.1-2013
Idaho2018 IECC and 90.1-201690.1-2013
Illinois2021 IECC and 90.1-201990.1-2019
Iowa2012 IECC and 90.1-201090.1-2007
KansasHome ruleNo statewide code
Kentucky2012 IECC and 90.1-201090.1-2007
Louisiana2021 IECC and 90.1-2019^90.1-2016
Maine2015 IECC and 90.1-201390.1-2013
Maryland2021 IECC and 90.1-2019^90.1-2019
Massachusetts2018 IECC and 90.1-2016^90.1-2019
Michigan2015 IECC and 90.1-2013^90.1-2013
MississippiNone statewideNo statewide code
MissouriHome ruleNo statewide code
Montana2021 IECC and 90.1-201990.1-2019
Nebraska2018 IECC and 90.1-201690.1-2013
Nevada2018 IECC and 90.1-201690.1-2013
New Hampshire2018 IECC and 90.1-2016^90.1-2013
New Jersey90.1-201990.1-2019
New Mexico2021 IECC and 90.1-2019^90.1-2019
New York2018 IECC and 90.1-2016^90.1-2016
North Carolina2015 IECC and 90.1-2013^90.1-2010
North DakotaHome ruleNo statewide code
Ohio2021 IECC and 90.1-2019^90.1-2016
Oklahoma2006 IECC and 90.1-2004<90.1-2007
Pennsylvania2018 IECC and 90.1-201690.1-2013
Rhode Island2018 IECC and 90.1-2016^90.1-2013
South Carolina2009 IECC and 90.1-200790.1-2007
South DakotaHome ruleNo statewide code
Tennessee2021 IECC and 90.1-201390.1-2007
Texas2015 IECC and 90.1-201390.1-2013
Utah2021 IECC and 90.1-2019^90.1-2019
Vermont2021 IECC and 90.1-2019^90.1-2019
Virginia2021 IECC and 90.1-2019^90.1-2019
Washington2018 Washington State Energy Code90.1-2019
Tennessee2012 IECC and 90.1-201090.1-2007
Texas2015 IECC and 90.1-201390.1-2013
Utah2021 IECC and 90.1-2019^90.1-2019
Vermont2018 IECC and 90.1-2016^90.1-2019
Virginia2021 IECC and 90.1-2019^90.1-2019
Washington2018 Washington State Energy Code90.1-2019
West Virginia90.1-201390.1-2013
Wisconsin2015 IECC and 90.1-2013^90.1-2010
WyomingHome ruleNo statewide code
  • ^ When an amendment impacting energy efficiency can be quantified using DOE Prototype Building Models, they were captured in the analysis.
  • For states adopting both IECC and 90.1, the IECC code is usually analyzed as the state current code in this study except for states with extensive amendments to the IECC.

Sensor Solutions

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Design Guide Key Concepts for Lobby

Designing an energy-efficient lighting control solution for lobby involves strategic placement of occupancy sensors to ensure comprehensive coverage of the space.

In a lobby, the primary areas that need to be covered by occupancy sensors are the entrance, the reception desk, and any seating or waiting areas. Here’s a possible design guide for a lobby:

  • Entrance Area: Install a ceiling occupancy sensor near the entrance. This sensor will detect the movement of people entering or exiting the lobby, ensuring the lights are activated when needed. Our ceiling sensors offer Auto ON and Full OFF functionality, providing automatic control of lighting based on occupancy.
  • Main Lobby Area: For larger lobbies, additional ceiling sensors may be required to cover the entire space. These sensors should be strategically placed to cover high-traffic areas, such as near the reception desk or waiting areas. The overlapping coverage of multiple sensors ensures there are no blind spots.
  • Reception Desk: Place a wall-mounted sensor near the reception desk. This sensor will detect the presence of the receptionist and any visitors at the desk, keeping the lights on in this area during occupied periods.
  • Seating/Waiting Areas: Install additional ceiling-mounted sensors in any seating or waiting areas. These sensors will detect when these areas are occupied and adjust the lighting accordingly.
  • Manual Control: Install a manual control near the entrance or reception desk. This allows for manual override of the lighting system when necessary.
  • Corridors Leading to Other Areas: Corridors leading to elevators, staircases, or other parts of the building should have their own wall or ceiling-mounted sensors. This ensures that lights in these areas are only activated when someone is passing through.

Wall Sensor Switches

RZ020/021 Motion Sensor Switches

  • 2-wire, 3-wire, 4-wires wiring options
  • Occupancy, Vacancy, Manual ON/OFF
  • Adjustive time delay and ambient light control

Multi-Location Wireless Wall Sensors

RZ020A/021A + RZ022W Kits

  • Hardwired RZ021A/022A occupancy sensor switch
  • Wireless companion switch (RZ022W) for multi-location control

Ceiling Occupancy Sensors


  • Hardwired occupancy sensors
  • Auto ON, auto OFF
  • Line voltage and Low voltage available

Core features included:

  • Integrated manual ON/OFF control for all lighting
  • Vacancy sensors (Manual ON only): Lights must be turned on manually only
  • Adjustable time-delay, lighting is automatically turned full OFF after 15mins
  • Additional: multi-location wireless kits to expand the control range without re-wring
  • Additional: multiple wiring options available for both new constructions and retrofit projects.

Meets the Mandatory Provisions

IECC – 2011

C405.2.1 Occupant sensor controls

Occupant sensor controls shall be installed to control lights in the space.

C405.2.1.1 Occupant sensor control functions

  • Manual on or partial on to no more than 50% power.
  • Full off within 20 minutes after all occupants have left the space
  • A manual control to turn off the lights.

Full automatic-on controls with no manual control are permitted in lobbies where manual operation would endanger occupant safety or security.

ASHRAE 90.1 – 2022 a Local control

There shall be one or more manual lighting control device that provides ON and OFF control
of all lighting in the space. g Automatic reduction control

The general lighting power in the space shall be automatically reduced by at least 50% within 15 minutes of all occupants leaving the space.

** NOTE: g is required in all other lobbies except (Elevator, Hotel, Motion picture theater, Performing arts theater) h Automatic full OFF control

All lighting in the space shall be automatically shut off within 15 minutes of all occupants leaving the space. i Scheduled shutoff

All lighting in the space shall be automatically shut off during periods when the space is scheduled to be unoccupied.

** NOTE: At least one h or i shall be implemented.

Title 24 – 2022

130.1 (a) Manual area controls.

Each area enclosed by ceiling-height partitions shall provide lighting controls that allow the lighting in that area to be manually turned on and off.

130.1 (c) Shut-OFF Controls.

Lighting shall be controlled with occupant sensing controls to automatically shut OFF all of the lighting in 20 minutes or less after the control zone is unoccupied that shall function either as:

  • A. Occupant sensing controls (if 130.1(b) not required to have multi-level lighting controls); or
  • B. Partial-ON occupant sensing controls, or
  • C. Vacancy sensing controls, where all lighting responds to a manual ON input only

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