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Ceiling Occupancy Sensor Featuring Adaptive Technology
Hubbell Bryant MSD500C Dual Ultrasonic and PIR 180 Degree, 500 Square Foot Occupancy Sensor
Hubbell Bryant MSD500C Dual Ultrasonic and PIR 180 Degree, 500 Square Foot Occupancy Sensor
Hubbell Bryant MSD500C Dual Ultrasonic and PIR 180 Degree, 500 Square Foot Occupancy Sensor
Item# 36751
Price: Normally $155.00 
Hot Deal $77.42
Free shipping on orders over $175 - See Details


  • Dual Ultrasonic and Passive Infrared detects both close and long range motion
  • Adaptive Technology - Install and forget
  • All digital sensing technology
  • Mounting base included with sensor
  • Non-volatile memory settings retained after power outage

Essential Info

The Hubbell Bryant MSD500C Dual Occupancy Sensor combines the excellent minor motion detection of ultrasonic with the outstanding passive infrared (PIR) long-range major motion detection. It also includes Bryant’s Adaptive Technology which allows you to install and forget, saving time and money from not having to do constant adjustments. This technology also helps eliminate false-offs and disturbances.

Dual technology occupancy sensors combine both passive infrared (PIR) and ultrasonic (US) technologies for maximum reliability. Because Ultrasonic and PIR need to both detect occupancy to turn lighting on, dual technology sensors minimize the risk of lights coming on when the space is unoccupied-false triggering. Continued detection by only one technology then keeps lighting on as necessary. Dual technology sensors offer the best performance for most applications.

  • Red LED indicates passive infrared detection
  • Green LED indicates ultrasonic detection
  • Off-white ABS enclosure blends with ceiling tile
  • Dual element passive-infrared detector and lens sense heat in motion
  • Digital, crystal controlled ultrasonic transmitter and receiver for coverage in each direction

    The Bryant 180°, 500 Square Foot Occupancy Sensor is also available with 360°, 2,000 Sq Ft and 180°, 1,000 Sq Ft coverage, each sold separately.

  • What's Included

  • 1x - MSD500C Dual Ultrasonic and PIR Motion Sensor
  • 1x - Mounting Base
  • 1x - Installation instructions

  • More Info

    Adaptive Technology
    Adaptive Technology is a BRYANT exclusive and delivers benefits to both building owners and occupants. The building owner achieves reduced energy costs, fewer adjustments and less maintenance, and the building occupant experiences fewer false-offs and disturbances. Adaptive technology occupancy sensors use microprocessors that make all the decisions for setting adjustments. Internal software constantly monitors the controlled area and automatically adjusts the sensitivity and timer based on environmental history. Instead of manually adjusting the sensor for seasonal changes, modified airflow, furniture layout or occupancy pattern changes, the sensor automatically adjusts itself. These automatic adjustments eliminate the need for multiple manual adjustments by maintenance personnel or outside contractors. BRYANT offers adaptive technology throughout its product offering - wall switches, ceiling and wall mount sensors in conjunction with dual technology, ultrasonic and passive infrared products.


    ManufacturerHubbell Bryant
    Manufacturer Product NoMSD500C
    UPC 781786102248
    Coverage Area500 Square Feet
    Field of View180 Degrees
    Power24V DC, 33mA
    Operational Frequency 40kHz
    Manufacturer WarrantyFive Years Limited
    Certifications cULus, CEC Title 24 Certified

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Hubbell Bryant, Tel: (800) 323-2792 Ext


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