Why there isn't one best sensor
One of the most common questions I get from distributors is also one of the hardest to answer: 'Which occupancy sensor should we stock?' My honest answer is that there isn't a single model that covers every wholesale order. The best choice changes with ceiling height, fixture type, local energy code, and whether the customer actually wants smart features like Philips Hue smart lighting.
I'm not an electrical engineer, and I won't pretend to be one. I'm the person who reviews lighting products before they go into a project. Each year I look at a couple hundred samples—LED downlights, high-bay fixtures, sensors, controls. So my approach is probably more skeptical than a sales rep's. That's useful here, because the cost of choosing the wrong occupancy sensor is usually invisible until after the fixtures are hung.
Instead of looking for a universal sensor, figure out which of these three worlds the project belongs to:
- Small-scale smart lighting projects built around Philips Hue downlights and the Hue ecosystem.
- Commercial recessed lighting retrofits where code compliance is the main driver.
- Warehouse or high-bay jobs that need bulk lighting controls you can actually maintain.
Scenario A: The Philips Hue smart lighting project
If the customer asks for a Philips Hue downlight, they are usually buying an ecosystem. They want the app, the scenes, the motion-triggered routines. The Hue motion sensor is built for exactly this. It detects movement and tells the Hue bridge to run a scene or turn lights on. In a small commercial space—say, a design studio or a boutique hotel lobby—that's a genuinely nice experience.
But from a wholesale perspective, I'd check a few things:
1. Compatibility with the bridge and the fixtures. It sounds basic, but I've seen orders where the sensor version and bridge firmware weren't actually compatible. A quick compatibility check up front beats a truck roll later.
2. Coverage area and mounting. The Hue motion sensor works best at tabletop height or corner mounting, not up on a 20-foot ceiling. If the project needs ceiling-mounted detection in a commercial space, this is not the tool.
3. Load control. The Hue motion sensor doesn't directly switch mains voltage lighting load. It's a sensor that sends a wireless signal. If the circuits need to be physically switched or dimmed by a UL-listed control, you still need relays or a compatible driver system.
I'll be honest: I've never fully understood why people expect a consumer sensor to do the job of a commercial control. The Hue system is brilliant at what it does, but what it does is create scenes and schedules—or rather, it triggers scenes based on occupancy and time. If the project needs automatic shutoff that satisfies an energy code, make sure the whole chain—sensor, relay, driver—has the required listings. That's not a dig at smart lighting; it's just a spec reality.
Scenario B: Recessed lighting upgrades in commercial spaces
This is the most common scenario I see. A contractor is replacing old recessed downlights in an office, retail space, or hotel, and the project needs lights to shut off when nobody's there.
For these projects, my default is a ceiling-mount PIR occupancy sensor wired to control a group of fixtures. It doesn't need to be smart, but it does need to have the right specs. Here's what I look for in a cut sheet:
Relay rating and LED inrush. LED drivers have inrush current that can weld a marginal relay contact. You want a sensor with a relay rated for LED loads, not one that gives you a generic '5A ballast' rating.
0-10V dimming output. If the downlights are dimmable, make sure the sensor has a 0-10V output. Many occupancy sensors are switch-only, and when the spec says 'occupancy sensor with 0-10V,' that's easy to miss.
Adjustable off-delay. For office spaces, a fixed 15-minute delay is fine in some projects, but I prefer adjustable delays. Energy codes—Title 24 in California is the one I hear about most—often require the lights to shut off within 20 minutes after the space is empty. An adjustable delay gives you flexibility on every job. (As of early 2026, that's still something I'd check.)
Occupancy or vacancy mode. Here's where I might go against common expectations. For private offices and small meeting rooms, I would actually choose a vacancy sensor over an occupancy sensor. A vacancy sensor requires manual-on and then turns off automatically when nobody is there. It saves a little more energy, and more importantly, it avoids the 'lights suddenly turn on when someone walks past the door' complaint. If the client really wants hands-free automatic-on, choose occupancy mode, but at least give them the option.
One more thing: if you're supplying recessed lighting, don't just order by CCT. I've rejected fixtures where the '3000K' from one production run and the '3000K' from another looked noticeably different on the ceiling. Ask for the MacAdam ellipse in the spec—a 3-step ellipse is a tighter color tolerance than the ANSI C78.377 baseline, and it's what I'd expect for fixtures that will sit side by side on a commercial ceiling.
Scenario C: Warehouse and high-bay bulk lighting controls
High-bay is a different beast. The mounting height alone changes everything. A sensor rated for a 12-foot ceiling might cover only a small pool on the warehouse floor from 25 feet, and a sensor that works in an empty warehouse can behave completely differently once pallet racking is installed.
For high-bay, I'd look for:
A sensor rated for high-bay mounting heights. Many commercial sensors list detection range at a 'typical' 8–12 ft mounting height. High-bay sensors are tested at 15–30 ft. Use the right tool.
Dual-tech or microwave detection. PIR alone can miss someone walking slowly between racking. Dual-tech (PIR plus microwave) is usually better in warehouses. It's also more expensive, so it's not automatically the right answer for every customer.
A relay that can handle the actual LED load. I'll say it again because it's important. High-bay fixtures often have multiple LED drivers. Check inrush current, not just wattage. This is the kind of spec detail that prevents a costly callback.
Replaceable sensor modules. This is a maintenance tip. A sensor module that costs a few dollars to replace and clips out in five minutes is better than a sensor that's built into the fixture and requires replacing the whole high-bay. For wholesale, this matters even more because your customers might need to stock spare modules across multiple sites.
I remember a Q4 2024 audit where the vendor listed a sensor as covering '2,000 square feet.' It did cover that in their test lab. In our racked warehouse with a 24-foot ceiling, the real coverage was maybe half that. I want to say the spec sheet later said 'up to 2,000 sq ft at 16 ft mounting,' but don't quote me on that—the point is that we now ask for detection range at the installed mounting height in every RFQ.
How to decide which scenario your order falls into
Before choosing a sensor, ask four questions:
- Is the customer building a smart lighting ecosystem? If they want app control and scenes, Philips Hue smart lighting is worth considering—especially for downlights and small commercial jobs.
- What is the ceiling height? Under 12 feet, standard PIR sensors are fine. Above 15 feet, you need high-bay gear.
- Does the project have to meet an energy code? If it's commercial, check local requirements. In many places, automatic shutoff within 20 minutes after vacancy is required.
- Who will maintain it? A networked sensor with a phone app is great until the facility manager leaves. If the customer doesn't have someone comfortable with smart controls, use a standalone sensor with clear settings.
One more piece of wholesale-specific advice: buying in bulk multiplies mistakes, too. If you're stocking a large order of bulk lighting controls, order one sample first, test it with the fixture you plan to sell, and make the vendor put the written spec in front of you. That's not a magical formula. It's just cheaper than the alternative.
Bottom line
The fundamentals of choosing an occupancy sensor haven't changed much: know the load, know the mounting height, and know the code. What has changed is that customers expect more choices—from Philips Hue smart lighting to recessed lighting retrofits and high-bay fixtures. The right answer for one project is very often the wrong answer for another. So when a distributor asks me which sensor to stock, I usually ask what kind of projects they're selling into first. That's not a dodge. It's the difference between selling a SKU and solving a problem.