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Case study · Networked lighting controls

Corridors and garage on one control network

92 units in the Bronx — 38,800 sq ft of corridor and garage, already LED, lit 8,760 hours a year with no controls.

Multifamily · Bronx, NY · 15 zones

Garage control zone planA below-grade garage with an entry ramp and stair core, divided into three control zones along the structural bays. A vehicle drives the aisle: the zone it is in runs at full, the zone ahead ramps up before it arrives, and the zones behind settle back to five percent.GARAGE LEVEL P1 — CONTROL ZONESRamp upStairLiftZone 1Zone 2Zone 3Drive aisleParking100 / 50 / 5% outputHigh bayOccupancy sensorWireless meshZone boundaryMotion in Zone 1 brightens Zone 2 before the driver reaches it. Parked cars don't keep the lights on.
Figure 1 — The zone around the vehicle runs at full, the next ramps ahead of it, the rest settle to 5%.
Detail

Per-floor corridor zoning

Twelve zones, one per floor. A resident stepping off the elevator lifts their own floor and nothing else.

Per-floor corridor zoningTwelve corridor zones stacked by floor. A resident stepping off the lift raises floor nine to full while the other eleven hold a twenty percent egress level; when the corridor empties it settles back and the whole stack rests at twenty.TYPICAL FLOOR — ONE ZONE PER CORRIDOR01 — 20%02 — 20%03 — 20%04 — 20%05 — 20%06 — 20%07 — 20%08 — 20%09 — 20%10 — 20%11 — 20%12 — 20%09 — 100%Floor 09 — resident off the liftFloor 09 — empty again, settled to 20%LiftStairUnitUnitUnitUnitUnitUnitUnitUnit100 / 20% outputCorridor fixtureSensorWireless meshOne floor brightens. The other eleven rest at a soft 20% — that is what per-floor zoning buys.
Figure 2 — A resident lifts floor 9 to full; the stack holds 20% and settles back when the corridor empties.
Schedule

Zone by zone

Fifteen zones. Strategy set per space.

ZoneSpaceHrs/yrControlWhy
Z-1 – Z-12Corridors, one per floor8,76020% standby, occupancy to fullOccupied minutes at a time
Z-13 – Z-15Garage, three structural bays8,7605% standby, adjacent-bay rampParked cars aren't occupancy
Commissioned

Sequence of operations

How each zone is programmed.

SpaceSequenceNote
Corridors ×1220% standby · occupancy to fullOne floor lifts at a time
Garage ×35% standby · adjacent-bay rampBrightens ahead of the driver
All zones24/7 occupancy-driven · no scheduleStandby never drops out
Calculated

Annual impact

24,020kWh avoided / yr
$6,005saved / yr at $0.25/kWh
9.4 t
CO₂ avoided / yr
≈1,060
gallons of gasoline equivalent
≈160
tree seedlings grown 10 years

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