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Notes from the bench and the field

Practical writing on lighting controls for owners, facility managers, engineers and IT leads: what to specify, how to test it, and how to keep it working after the ribbon is cut.

ProjectLytbit · Smart lighting & IoT
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An open specimen drawer with lighting-control parts pinned in rows like butterflies, each with a blank tag and faint glow, and a small naturalist with a net standing at the edge.
Plate N-00Field notes are only useful if someone pins them down.
A team of draft horses drawn as glowing LED fixtures pulls a wagon while a small driver attaches reins to each horse, and the horses already on reins glow more softly.
Controls Design · October 28, 2026

LED-to-LED Retrofits: When Adding Controls to Existing LEDs Pays Off

Your fixtures are already LED. How to decide whether to add controls, replace with LLLC fixtures, or wait, based on drivers, hours, condition and incentives.

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At a rural crossroads with a blank signpost, three figures point down different roads while a traveler carrying drawings and a light fixture turns toward a small county office with a lit porch.
Codes & Incentives · October 28, 2026

Mississippi's Commercial Energy Code and Your Lighting Controls

Sources disagree on Mississippi's statewide commercial energy code. How to confirm what applies to your project and design lighting controls that pass anyway.

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A pasture fenced into room-shaped pens holds a herd of light fixtures, sensors and an air handler on thin legs. Those inside wear ear tags linked by threads; untagged devices wander dimly outside the fence.
Integration & Data · October 8, 2026

Brick, Haystack and ASHRAE 223P: Why Tagging Decides Whether Your Data Is Usable

Brick Schema, Project Haystack and ASHRAE 223P compared: what each describes, how they fit together, and how to specify tagging for lighting and IoT data.

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An operator connects glowing patch cords on a vintage switchboard whose jacks link to lights, sensors, a thermostat and a meter, with a fainter backup switchboard standing behind it.
Integration & Data · September 24, 2026

BACnet/SC for Lighting Networks

What BACnet Secure Connect changes for lighting networks: TLS WebSockets, certificates, hubs instead of BBMDs, and how to plan a move from BACnet/IP.

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A river with a half-built bridge made of light fixtures on one side and a small lantern-lit ferry pulled across on a rope on the other, both heading for the same lit doorway.
Operations · September 24, 2026

Lighting-as-a-Service vs. Buying Outright: A CFO's Framework

A CFO's framework for comparing lighting-as-a-service with buying lighting and controls outright: cash, risk, performance, term, ownership and ASC 842.

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A mostly empty restaurant has one lit table with two diners, while a huge air-handling unit in the kitchen blows cold air at every table and an order ticket travels toward the kitchen on a wire.
Integration & Data · September 3, 2026

Using Lighting Occupancy Data to Set Back HVAC

Your lighting sensors already know which rooms are empty. How to share that occupancy data with HVAC for setback: sequences, points, pitfalls and testing.

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An oversized medicine dropper hanging from an office ceiling releases a single drop of light at a seated person's eye level, while a large ceiling shower head nearby sprays light across an empty floor.
Controls Design · August 20, 2026

Circadian Lighting Without Blowing the Energy Budget

Circadian lighting for offices under ANSI/IES RP-46-25 without a large energy penalty: light at the eye, vertical surfaces, daylight, timing and controls.

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A small figure carrying a light fixture tests a frozen pond with a pole, halfway between a lit house on thick ice and a dark commercial building across thinner, cracked ice.
Protocols · August 13, 2026

Is Matter Ready for Commercial Buildings?

Matter now names commercial buildings as a target, but it has no commercial lighting device types yet. What that means for owners and what to specify today.

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A cutaway of a basement wall where a garden hose from a ceiling of sensors meets a clean water main, and a kneeling plumber points at a newly fitted backflow valve before turning the tap.
Operations · July 23, 2026

Questions to Ask Before Your Lighting Network Touches IT

Before a lighting control system joins your network, ask these questions about segmentation, credentials, firmware, remote access, cloud services and data.

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A light fixture the size of an airliner parked on a tarmac while a small figure with a clipboard inspects a sensor underneath with a flashlight, as a ground crew member kneels by a wheel chock.
Operations · June 30, 2026

A Lighting Controls Commissioning Checklist That Prevents Callbacks

A field-ready lighting controls commissioning checklist: pre-functional checks, sensor and daylight tests, trim, schedules, integration and handover records.

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Four different beehives stand on a ceiling grid. Bees shaped like tiny light fixtures trace separate looping dance paths above each hive, while a veiled beekeeper carries a frame between two hives.
Protocols · May 21, 2026

Bluetooth Mesh, Zigbee 4.0, Thread or Matter? Picking Wireless for Commercial Controls

Bluetooth Mesh NLC, Zigbee 4.0, Thread and Matter compared for commercial lighting controls: profiles, maturity, gateways, security and where each fits.

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An office floor drawn as fresh snow with desks half-buried, trails of footprints clustering around one small table, and ceiling lights glowing only above the newest tracks.
Integration & Data · May 14, 2026

Occupancy, Vacancy and Utilization Sensors: What Each One Measures

Occupancy, vacancy and utilization sensors answer different questions. What each detects, where each belongs in an office, and which data you can trust.

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Light fixtures fly like kites on cables tethered to a network switch. The nearby fixtures float high and glow, while the farthest ones sag and dim near a distant warehouse outline.
Protocols · April 16, 2026

PoE Lighting: Where It Pays Off and Where It Doesn't

A practical look at Power over Ethernet lighting: where PoE pays off in offices and renovations, and where long runs and high-bay loads make it the wrong tool.

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An overhead view of warehouse racking drawn as swimming lanes with fixture floats, where one forklift leaves a fading wake of light rings while the other lanes stay dim.
Controls Design · April 9, 2026

Warehouse Lighting Controls: Zoning, High-Bay Sensors and Aisle Strategies

How to zone a warehouse, place high-bay sensors, set aisle low levels and delays, and handle docks and cold storage, from a controls team based in Tupelo.

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Two marionette controls hang above rows of pendant lights. The left one lifts a whole row on a single string; the right one has a string per fixture, and one fixture tugs its string back.
Protocols · March 12, 2026

0-10V vs. DALI-2 vs. D4i: A Practical Dimming Protocol Guide

How 0-10V, DALI-2 and D4i dimming differ in wiring, feedback, low-end behavior and data, and which to specify for warehouses, clinics, schools and offices.

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A train of glowing light-fixture carriages approaches the end of an old rail line while track workers throw a newly laid switch that curves onto fresh rails toward the horizon.
Operations · March 12, 2026

When Your Controls Vendor Exits: A Migration Playbook for Orphaned Systems

What to do when your lighting controls platform loses support: capture the configuration, triage by risk, reuse what you can and migrate in phases.

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A queue of light fixtures, sensors and a thermostat on tiny legs waits at a border booth, where an officer inspects a fixture's open suitcase holding a folded report, a meter and a cable.
Codes & Incentives · February 12, 2026

DLC NLC 5.2, Explained for Building Owners

What DLC's NLC 5.2 requirements change for building owners: HVAC integration, C137.9 configuration reports, energy monitoring, cybersecurity and rebates.

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Two small climbers carrying light fixtures scale a building facade drawn as a cliff; one is roped through a glowing anchor to a belayer below, the other climbs ahead with a loose, unclipped rope.
Codes & Incentives · February 12, 2026

How to Get the Most From TVA EnergyRight on a Controls Project

A process guide to TVA EnergyRight lighting incentives on a controls project: pre-approval, the partner network, the two tracks, controls credit and paperwork.

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A tall carved stone tablet engraved twice with the same ceiling plan in two notations, while a small archaeologist on a ladder holds a lantern to one of several glowing spots where the carvings differ.
Codes & Incentives · January 15, 2026

ASHRAE 90.1-2022 vs. 2024 IECC: A Lighting Controls Checklist

How ASHRAE 90.1-2022 and the 2024 IECC compare on lighting controls, with a checklist of control types, typical requirements and the test for each.

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A flock of birds shaped like linear light fixtures swoops over a warehouse floor plan. The birds above one aisle, where a small figure walks, glow brightly while the rest of the flock stays dim.
Controls Design · January 8, 2026

NLC vs. LLLC: Choosing a Lighting Control Architecture

Room-level networked controls or luminaire-level controls? How NLC and LLLC differ, where each fits in Mid-South buildings, and how to choose by space type.

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This is where we write down what we learn. Some posts start on the bench in the Lytbit Lab, where we test sensors, drivers, gateways and network behavior before anything goes in a ceiling. Others start with the questions owners across the Mid-South ask: why a warehouse aisle won’t stay dim, where a school’s lost schedules went, whether tunable white is worth it in a clinic.

Every post aims to help you make one decision, and says plainly what we would do. Where we cite numbers, we name the source. Where a question depends on your jurisdiction, your utility or your accountant, we say so rather than guess.

Posts fall into five categories, which you can filter below:

  • Controls Design: zoning, sensors, daylight and retrofit strategy.
  • Protocols: DALI-2, 0-10V, wireless mesh, PoE and Matter.
  • Codes & Incentives: energy codes, DLC listings and utility programs.
  • Integration & Data: BACnet, tagging, occupancy data and HVAC.
  • Operations: commissioning, migration, cybersecurity and financing.

If you have a question you’d like us to test, write to lab@lytbit.com.

Tell us about the building.

Floor plans, utility bills and a list of what bothers you are enough to start. We reply within one business day with what we would look at first.