Service
Motion sensor light installation
Most security lights replace an existing outdoor fixture. New locations need wiring outside.
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Written by HyreElectrical Research Desk Primary-source research and fact checking
The short answer
Motion sensor light installation is a job for a licensed electrician: swapping an existing outdoor fixture for a sensor light is a short job, while a new location needs a weatherproof box, cable and often a switch.
Outdoor fixtures must be rated for wet locations, and the sensor needs aiming so it covers paths, not the street.
What the job includes
Turning off the circuit, mounting a weatherproof box, sealing it, wiring the fixture, setting sensitivity and timer, and aiming the sensor.
A switch ahead of the sensor lets you override it.
New locations
A new wall or eave location means cable from an existing circuit, often through an attic. Detached locations need buried cable.
See outdoor outlet installation for outdoor wiring rules.
Permit, time and what changes the price
Swaps rarely need a permit; new locations often do.
Price drivers: number of lights, height, new wiring, smart features. No price ranges are published here until we hold enough sourced, dated quotes; see cost guides.
Glare and settings
Aim down and adjust range so lights do not trigger on traffic. Warm, shielded lights reduce glare.
Check the license on your state board before anyone starts: how to check an electrician license.
Settings that matter
Most sensor lights have three dials: sensitivity, time on, and a dusk setting that stops daytime triggering. Start with medium sensitivity and short time, then adjust after a few nights.
Mounting height affects range. Too high and the sensor misses people close to the door; too low and it is easy to tamper with. Smart models can send alerts and link to cameras, which need Wi-Fi at the location.
Replacing old halogen floods with LED sensor fixtures cuts energy use, according to DOE guidance on efficient lighting.
What a fair written quote lists
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Questions
Can a motion light replace any outdoor fixture?
Why does my motion light stay on?
Do I need a switch?
Solar motion lights?
Written and audited by
HyreElectrical Research Desk
Primary-source research and fact checking
We read the model code, the federal safety notice, the municipal fee sheet or the utility tariff ourselves, and we publish the figure with the document it came from and the date we retrieved it.
Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify. HyreElectrical does not perform, supervise or warrant electrical work. Authorship is organizational: this desk, not a named persona.
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- original research studies published
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- states with verified license records
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- electrical companies in those records
- 74%
- of the store is Florida — disclosed first, not footnoted
How this desk works
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- Load calculations on this site are a published simplification in the shape of NEC 220.82 — first 10 kVA at 100%, remainder at 40%, HVAC at 100%, EVSE at 125%. They are labeled as not a stamped calculation. A licensed electrician using the adopted edition does that work.
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Authorship on this site is organizational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.
Sources & retrieval dates
HyreElectrical is a publisher. It does not perform, supervise, inspect or warrant electrical work, holds no electrical license, and matching is still being built, so an inquiry is not a service call.
This page is general information, not a diagnosis or a quote. Code rules vary by the NEC edition your state or city adopted and its local amendments.