12~24V 97dB High sound quantity clean human voice car truck warning
alarm reverse buzzer waterproof customise CE siren
1. Specifications
| Sound pressure | 97±4(A)AT 4FT |
| Voltage | 12~24VDC |
| Maximum current | 0.6A |
| Temperature | -40°C ~ 100°C |
| Frequency | 500Hz~7KHz±10% |
| Work cycle | 4.23second |
| Weight | 580g |
2. Description
| 1. | B80 series is made for truck bus applications in medium/high noise
areas. |
| 2. | Intelligent models measure the ambient noise level and adjust their
output level. |
| 3. | create a volume that is safe without being annoying or contributing
to noise pollution. |
| 4. | Designed to meet all hash conditions and provide splendid
durability. |
| 5. | Sealed in epoxy for protection against dust, moisture and
vibration. |
| 6. | Easy to install, and many optional connectors/wire. |
| 7. | RoHS compliant, CE certified |
3. Applications
Back-up alarm is a device intended to warn passers-by of a vehicle moving in reverse. They typically produce 1000 Hz pure tone beeps at 97-112 decibels. Matsusaburo Yamaguchi of Yamaguchi Electric Company, Japan, invented the back-up beeper. It was first manufactured as model
BA1 in 1963. ISO 6165 describes "audible travel alarms", and ISO
9533 describes how to measure the performance of the alarms.
The samples of a white noise signal may be sequential in time, or
arranged along one or more spatial dimensions. In digital image
processing, the pixels of a white noise image are typically
arranged in a rectangular grid, and are assumed to be independent
random variables with uniform probability distribution over some
interval. The concept can be defined also for signals spread over
more complicated domains, such as a sphere or a torus.
Some "white noise" sound (Loud)
An infinite-bandwidth white noise signal is a purely theoretical
construction. The bandwidth of white noise is limited in practice
by the mechanism of noise generation, by the transmission medium
and by finite observation capabilities. Thus, random signals are
considered "white noise" if they are observed to have a flat
spectrum over the range of frequencies that are relevant to the
context. For an audio signal, the relevant range is the band of
audible sound frequencies (between 20 and 20,000 Hz). Such a signal
is heard by the human ear as a hissing sound, resembling the /h/
sound in a sustained aspiration. On the other hand, the /sh/ sound
in "ash" is a colored noise because it has a formant structure. In
music and acoustics, the term "white noise" may be used for any
signal that has a similar hissing sound.
The term white noise is sometimes used in the context of
phylogenetically based statistical methods to refer to a lack of
phylogenetic pattern in comparative data. It is sometimes used
analogously in nontechnical contexts to mean "random talk without
meaningful contents".
4. Competitive Advantage
1). Reinforced nylong housing eliminates corrosion damage
2). Wire/connector/bolt mounting optional, easy to install
3). Voltage polarity protection
4). RoHS compliant, CE certified, IP68 protection
5. Information
| Place of Origin: | China |
| Brand Name: | Yuesonic |
| Certification: | CE/RoHS/SGS |
| Model Number: | YS-B81-L |
6. Custom properties
| Product Name: | Back-up alarm | Application: | Outdoor |
| Weight: | 580g | Sound: | Beep sound |
| Material: | Epoxy resin | Voltage: | 12-24V |
| Standard: | CE/ROHS/SGS | Type: | Heavy machinery |
7. Product commercial terms
| Minimum Order Quantity: | 20pcs |
| Price: | negotiation |
| Packaging Details: | T/T or western Union |
| Delivery Time: | 3,000pcs per month |
| Payment Terms: | 10 working days after received your payment |
| Supply Ability: | Packed in box firstly,and then reinforced with neutral packaging
for outer packing |
