WattStopper W-500A Ultrasonic ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$211.46
$161.46
WattStopper W-500A Ultrasonic Ceiling Occupancy Sensor, 24VDC, 500 sq ft

WattStopper W-500A Ultrasonic Ceiling Occupancy Sensor 24VDC 500 sq ft Coverage

(No reviews yet) Write a Review

Model: W-500A
Selected Model is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$211.46
$161.46
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

WattStopper W-500A Ultrasonic Ceiling Occupancy Sensor 24VDC 500 sq ft Coverage

Professional Energy Management & Automatic Lighting Control

The WattStopper W-500A Ultrasonic Ceiling Occupancy Sensor delivers reliable 24VDC operation with 500 square foot coverage for professional lighting control applications. This ceiling-mounted sensor automatically turns lights on and off based on occupancy detection to reduce energy costs, making it ideal for open office areas, conference rooms, and restrooms.

Professional Features & Benefits

  • 500 Square Foot Coverage: Provides comprehensive detection area suitable for medium-sized spaces and professional environments.
  • 24VDC Operation: Low voltage design ensures safe installation and reliable performance in commercial applications.
  • Advanced Signal Processing (ASP) Circuitry: Automatically adjusts detection threshold for optimal performance and reduced false triggering.
  • Adjustable Time Delay: Configurable from 15 seconds to 15 minutes allows customization for specific application requirements.
  • Automatic/Manual Operation: Compatible with BZ-150 Power Pack for flexible control options in professional installations.
  • Energy Cost Reduction: Occupancy-based lighting control significantly reduces energy consumption and operational costs.
  • Ultrasonic Detection Technology: Provides reliable motion sensing for consistent occupancy detection in various environments.

Technical Specifications

  • Country Of Origin: China

Professional Applications

  • Open Office Areas
  • Conference Rooms
  • Restrooms
  • Commercial Facilities
  • Professional Offices
  • Retail Establishments
  • Educational Facilities

Why Choose WattStopper Quality?

WattStopper delivers professional-grade occupancy sensing solutions with advanced signal processing technology and reliable 24VDC operation. The adjustable time delay and comprehensive coverage area provide flexible installation options for diverse commercial applications, ensuring consistent energy management performance.

Manufacturer Resources

Product Specs

Country Of Origin:
China

WattStopper W-500A – Frequently Asked Questions

1) Does the WattStopper W-500A occupancy sensor need a power pack to switch line voltage lighting?
Yes. The W-500A is a 24VDC low voltage sensor, so it does not switch line voltage on its own. It works with the BZ-150 power pack, which supplies the 24VDC to the sensor and does the actual switching of the lighting circuit. Budget for at least one power pack per circuit when you spec the job, plus the low voltage run from the ceiling location back to it.
2) How big a room will one WattStopper W-500A ultrasonic sensor cover?
Coverage is 500 square feet, which puts it in the range of a conference room, a restroom, or a bay of an open office. Larger rooms need more than one sensor wired to the same power pack, and rooms broken up by partitions or hard corners will need the layout checked, since ultrasonic detection works off sound wave disturbance filling the space rather than line of sight to a warm body.
3) Can I stop the lights dropping out on people in a conference room with the W-500A?
The time delay is adjustable from 15 seconds up to 15 minutes. For a conference room, run it toward the long end so seated attendees in a presentation do not get dropped; restrooms and store rooms are usually set short to bank the energy. The sensor also carries Advanced Signal Processing circuitry that adjusts the detection threshold automatically, which is what cuts down on false trips from background noise.
4) Is the W-500A a wall switch sensor or does it mount in the ceiling?
Ceiling mount. The W-500A drops into the ceiling and covers the room from above, which is how it reaches 500 square feet and sees past furniture and partitions. If you are replacing a wall toggle switch and have no ceiling access or low voltage run, this is not the part, you want a wall switch occupancy sensor that fits the existing single gang box and switches line voltage directly.
5) Should I use an ultrasonic sensor like the W-500A or a passive infrared one?
Ultrasonic is the right pick where occupants make small movements or sit out of direct view, which is why the W-500A suits restrooms with stall partitions, private offices, and open office areas. It senses disturbance in the sound field rather than needing a clear sightline, so obstructions matter less. Passive infrared is the better choice in spaces with air movement or vibration that can trip an ultrasonic head, such as rooms with strong HVAC diffusers or open warehouse areas where you want tight coverage boundaries.
6) What part number do I order for the WattStopper 500 sq ft ultrasonic ceiling sensor?
The manufacturer part number is W-500A. It is the only model in the family at this coverage and voltage, so there is no finish, color, or voltage option to specify on the order. The power pack is ordered separately.
7) Where is the WattStopper W-500A sensor made?
Country of origin on the W-500A is China. That matters on public work where a Buy American or domestic preference clause applies to the electrical package, so check it against your specification before you submit the sensor on a government or federally funded project.
How fast can I get the WattStopper W-500A delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the WattStopper W-500A come with a warranty?
Absolutely. The WattStopper W-500A is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the WattStopper W-500A?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the WattStopper W-500A from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!