
5
Q What is the warranty on the H-MOSS
Occupancy Sensors products?
A There is a five year limited warranty on the H-MOSS
Occupancy Sensor product line.
Q What is a “false-ON”?
A A “false-ON” is when the lights turn ON when there
are no occupants in the intended area of coverage.
“False-ONs” typically occur when the sensor
detects a hallway passerby and turns the lights ON.
The lights then stay ON for an entire timer cycle.
Q Do we have a solution for “false-ONs”?
A Choosing the correct technology sensor with the
correct coverage pattern, and placing/aiming it
correctly will inherently reduce “false-ONs.”
Adapting to false-ONs and PIR lens masking
could be better.
Q How does the sensor adapt to “false-ONs”?
A If a minor motion signal is received and no major
motion signal is seen within 5 seconds (passerby
but no room entry, typically) the sensitivity of the
dominant technology (the technology which sensed
the passerby first) is reduced by 6%.
Q Do Hubbell H-MOSS sensors “fail safe” or fail
with the lights ON?
A No manufacturer can guarantee that their sensor
will fail to an ON state. There are too many variables
and potential failure scenarios to guarantee that a
product will fail with the lights ON.
Q Do H-MOSS sensors interfere with pacemakers?
A The power levels and transducer style (piezoelectric)
we use has no known issues with pacemakers.
The only precautions we have found regarding
pacemakers and ultrasonic are for ultrasound
imaging machines or certain ultrasonic dental
equipment. Both use higher power transmitters
and are operated in close proximity to the body.
Q Do H-MOSS sensors interfere with interactive
whiteboards?
A There are four main technologies that interactive
whiteboards use for marker tracking: IR scan,
ultrasonic, resistive touch and electromagnetic
touch. The only technology that will have
interference issues is ultrasonic sensing. Ultrasonic
sensing boards are predominantly made by
Mimio, Panasonic, and Hitachi. The market share
for ultrasonic boards is small and shrinking. The
most common whiteboard technology used
today is electromagnetic sensing and this has no
interference issues with ultrasonic sensing. This is
what market leaders SMART (61% market share)
and Promethean (26% market share) use.
Q Do H-MOSS sensors interfere with hearing
aids?
A There should be no issue with most modern
hearing aids. Previous issues in the 80s and
90s resulted from improper hearing aid designs.
The NEMA-sponsored study, conducted by
David F. Henry, PhD and Barak Dar, “Effects of
Ultrasonic Sensors on Hearing Aids” (February
2006), concluded: “After assessing 23 hearing
aids representing the digital products of all
major hearing aid manufacturers, just two
hearing instruments were severely affected
by ultrasonic occupancy sensor devices. One
device, the ImpaCt DSR675 manufactured by
AVR Sonovation, has not been in production for
over four years. Newer hearing instruments from
this manufacturer have exhibited no interference
when exposed to the ultrasonic occupancy
sensor signals. The second device, the Bravo,
manufactured by Wide, is still in production.
However, the manufacturer reports that they have
developed a modification that can be made to the
instrument that greatly reduces the susceptibility
of the instrument to ultrasonic occupancy sensor
signals.” See the link below for further reading:
http://www.aboutlightingcontrols.org/education/
papers/ultrasonic_sensors.shtml.
Q Where can I download product drawings and
installation instructions?
A Product drawings and installation instructions are
available at www.hubbell-wiring.com.
Q Do Hubbell H-MOSS line voltage sensors,
control units and add-a relays employ
“zero arc point” switching?
A All Hubbell line voltage sensors (ceiling and wall
switch), control units and add-a-relays employ
“zero arc point” switching.
Q Can sensors see motion through glass walls
or windows?
A No. Neither infrared nor ultrasonic technologies can
sense motion through glass walls or windows.
Q Do the adjustment knobs move during
self-adjusting?
A No, just the values change in the sensor’s
microprocessor.
Common H-MOSS Questions