Bluetooth-Powered Occupancy Sensing for High Bay and Warehouse Ceilings
The RAB MVSW50/LCB is a Lightcloud Blue-compatible occupancy sensor with daylight harvesting that communicates wirelessly over Bluetooth Mesh, no gateway or hub required. It works directly with any Lightcloud Blue-enabled fixture or can be used to control non-RAB fixtures by way of a Lightcloud Blue line-voltage controller, bringing occupancy sensing and daylight harvesting to fixtures that previously lacked smart controls. Built for ceilings up to 49 ft, it uses microwave detection to cover the space below it, even where racking, shelving, or other obstructions would block a PIR sensor's line of sight.
- Lights On the Instant Someone Enters: Occupancy sensing brings the space to full brightness the moment someone walks in, improving safety and visibility, then dims or shuts the lights off automatically once the space empties out, with a timeout adjustable from 1 to 240 minutes to match how the space is actually used.
- Consistent Brightness + Energy Savings: Daylight harvesting continuously fine-tunes output to hold a space at a set lux threshold, so lights never run brighter, or use more energy, than the space actually needs at that moment, with no manual adjustment required.
- Wide Coverage at High Bay Mounting Heights: At a 49 ft mounting height, this sensor covers a 50 ft detection diameter, suited to warehouses, distribution centers, manufacturing floors, and other tall-ceiling industrial spaces.
- Sees Past Obstructions Line-of-Sight Sensors Can't: Microwave detection isn't blocked by non-metal obstructions the way passive infrared is, so racking, shelving, or stacked inventory in a warehouse aisle won't create blind spots.
- Optional Mounting Arm for Tricky Layouts: Where ductwork, sprinkler lines, or other low-clearance features would block a flush-mounted sensor's sightline, the optional ARM/LCB bracket (sold separately) lets you angle or offset the sensor to restore a clear view of the space.
- Wireless Connection for Ideal Placement: Connects wirelessly to the devices it controls, so it can be mounted wherever it provides the best coverage, not wherever the lighting circuit happens to run.
- Rated for Indoor and Outdoor Use: IP66 sealing handles dry, damp, or wet environments, so this sensor isn't limited to conditioned indoor spaces alone.
- Adjustable From Your Phone: All sensor settings — sensitivity, timeout, dim levels, and daylight threshold — are configured through the Lightcloud Blue app rather than a physical dial on the sensor itself.
- DLC NLC Listed for Utility Rebates: This sensor is on the Design Lights Consortium's Network Lighting Controls Qualified Products List, making it eligible for rebates from participating utilities.
- 5-Year Warranty: Full manufacturer coverage — purchased through ELEDLights as an authorized RAB dealer.
Bring Smart Control to Your Warehouse, Distribution Center, and High Bay Spaces
This sensor's real power shows up when it's controlling fixtures that never had any smart features to begin with. Pair the MVSW50/LCB with a Lightcloud Blue line-voltage controller, and any 0-10V dimmable high bay already installed in your facility gains the same occupancy sensing and daylight harvesting as a purpose-built smart fixture, without replacing a single light.
- Retrofit Existing High Bays Without New Fixtures: If your warehouse or facility already runs 0-10V dimmable high bays at tall ceiling heights, this sensor and one or more Lightcloud Blue controllers can add motion-based control and daylight harvesting on top of what's already installed, no fixture replacement required.
- Real Energy Savings in Aisles That Aren't Always Busy: Warehouse aisles, loading docks, and storage areas are rarely occupied every minute of the day. Automatically dimming or shutting off lights when a space empties out, then bringing them back the instant someone enters, adds up to real savings over time.
- One System Across RAB and Non-RAB Fixtures Alike: Because the sensor and controller communicate over the same Bluetooth Mesh network, a facility can mix RAB fixtures with retrofitted non-RAB fixtures and control them all from the same app.
See Lightcloud Blue in Action
This video covers the full Lightcloud Blue ecosystem across many RAB products. Some features require additional products beyond MVSW50/LCB.
Frequently Asked Questions
How does it install?
The sensor mounts to the ceiling or a junction box at heights up to 49 ft. Where ductwork, sprinkler lines, or other low-clearance features would block the sensor's sightline if mounted flush, the optional ARM/LCB bracket lets you angle or offset the sensor instead.
Why choose microwave over a PIR sensor?
PIR sensors need a clear line of sight to detect motion, which can leave blind spots in a warehouse aisle lined with racking or stacked inventory. Microwave detection isn't blocked by non-metal obstructions the same way, making it a better fit for spaces where shelving or product could otherwise interrupt a PIR sensor's view.
Why not just use a simple plug-in occupancy or daylight sensor?
A basic plug-in sensor works fine for a single fixture, but it has to be manually adjusted at the sensor itself every time sensitivity, timeout, or dim levels need to change. This sensor is adjusted entirely from your phone, and it can control an entire area's worth of fixtures wirelessly, not just the one it's wired to.
How does it connect to my lights?
This sensor communicates over Bluetooth Mesh to control Lightcloud Blue-enabled fixtures or line-voltage controllers elsewhere in the same area. The sensor is wired to a constant power source but does not connect by wires to your lights or controller.
Does this require a dim-to-off driver?
No. MVSW50/LCB works with any 0-10V dimmable fixture. A dim-to-off driver isn't required, though it does allow a smoother, continuous fade all the way to true darkness rather than stopping at the driver's minimum dim level.
Do I need a Lightcloud Blue controller to use this sensor?
Only if you're adding smart control to a fixture that isn't already Lightcloud Blue-enabled. If your fixture already has Lightcloud Blue built in, this sensor communicates with it directly. If it doesn't, pair this sensor with a Lightcloud Blue line-voltage controller (like LCBC-X or LCBLUECONTROL) wired to that fixture, and the sensor's occupancy and daylight data controls it the same way.
Is this sensor DLC listed or rebate-eligible?
The sensor itself is not DLC listed. However, when paired with a DLC-qualified Lightcloud Blue controller, the overall lighting control system may still be eligible for utility rebates — check with your utility provider or our rebate assistance team to confirm what's available for your project.
Can it turn lights off completely, or does it keep them dimmed?
Both options are available. When the space is vacant, you can set the sensor to turn lights fully off or to hold at a low dim level, whichever fits the application.
Do I have to convert my whole facility at once?
No. You can start with a single room or zone, install a sensor and controller there, and see the results before expanding further. Every device joins the same Bluetooth Mesh network, so adding more sensors and controllers later doesn't require any new infrastructure, just more devices on the same system.
Microwave vs. PIR: which should I choose?
Microwave sensors like this one often consume more energy than PIR alternatives but are better at "seeing" past racking, shelving, and stacked inventory. They are less prone to false triggers around industrial heat sources and often have a longer range. PIR sensors, by contrast, are best for open spaces with a clear line of sight but can be less reliable near heat-generating equipment and in areas with racking and shelves. For a space with obstructions, industrial heat sources, or ceilings above 39 ft, stick with this sensor. Otherwise, see PIRW40/LCB.
The ELEDLights Advantage on RAB
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- Rebate Assistance: Our team will help you take advantage of available utility rebates so you don't leave money on the table.