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LED Deck Lighting Kit FVTLED Low Φ1 Oklahoma City Mall Waterproof Cheap Voltage 10pcs

LED Deck Lighting Kit, FVTLED 10pcs Low Voltage Waterproof Φ1

$44

LED Deck Lighting Kit, FVTLED 10pcs Low Voltage Waterproof Φ1

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Product Description

Specifications:

Model: D45B

Lighting Colors: Warm White

Voltage: DC12V

Rate Output Power: 1W

Lumen Output: 75 LM

Beam angle: 120°

LED Chips: 6 x SMD2835

IP Rating: IP67

Application: Indoor amp; Outdoor

Wire length: Double 0.5M

Distance between each light: 1M (3.28ft)

Item Colors: Black

Material: PC amp; High Gradeamp;Stainless Steel

Dimension: Φ45*H26mm

Low Voltage Waterproof Outdoor LED Deck Light Kit, Create Cozy and Ambiance for Outdoor Entertaining Spaces

deck lightsdeck lights

Energy-efficient LED Lights are Low Profile and Emit Warm White Light

Features:

Add beauty and enhanced safety to outdoor settings with this surface light.

These light's appearance of integration, metal integrated into plastic, make better waterproof effect.

DC12V LED deck light Dia.45mm., with 1m cable attached by male and female waterproof connector, and it work with 12 volts (low voltage) DC power supply.

3ft of cable between each light. You can choose how many lights to connect together through parallel connection, decorating your place as you wish by different light quantities.

Versatile and multi-functional. Anywhere you can drill a hole they can be used. It can be widely used on the deck, floor, corner, bathroom etc.

These LED Deck lights are of the highest quality and are an ideal product for transforming gardens, homes, etc.

Package Include:

"u"10 x LED Deck Lights

"u"1 x 12W LED Power Supply

"tbody" "th" D45 RGBW Deck Lights Kit "th" D45 RGBW WIFI Deck Lights Kit "th" D47 RGBW WIFI Deck Lights Kit "th" D47 WIFI Warm White Deck Lights Kit "th" D45 RGB Bluetooth Control Deck Lights Kit "th" D61 RGB Deck Lights Kit
D4553 Deck lights deck lights deck lights deck lights deck lights
Model D45 D45 D47X D47X D45 D61
Shell Color Silver Silver Red Bronze Red Bronze Silver Silver
Lights Color RGB+Warm White RGB+Warm White RGB+Warm White Warm White RGB RGB
APP Control x ✓ ✓ ✓ ✓ x
Light Dimension Φ1.77" x H1.02" Φ1.77" x H1.02" Φ1.85" x H1.02" Φ1.85" x H1.02" Φ1.77" x H1.02" Φ2.4" x H1.02"
Mount Hole Size Φ1.38" Φ1.38" Φ1.26" Φ1.26" Φ1.38" Φ1.65"
"div"

LED Deck Lighting Kit, FVTLED 10pcs Low Voltage Waterproof Φ1

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What Is Wavelength Standard? Advantages Of Wavelength Standards and Disadvantages of Material Standards

In the line and end standard , the working standard is derived by successive comparison of a physical standard. This may lead to an unaccept...

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In the line and end standard, the working standard is derived by successive comparison of a physical standard. This may lead to an unacceptable error of the standard itself. The dependency of working standard on physical standard is eliminated by using wavelength of monochromatic radiation as a natural and invariable unit of length. By doing so, the definition of standard length relative to the meter is expressed in terms of the accurately known wavelength of light.

Difference Between Line Standard and End Standard in Metrology


Read: Line Standard and End Standard of Measurement - Characteristics, Pros and Cons

Comparison between line standard and end standard is given below.


Line Standard

End Standard

Distance between two engraved lines is used for measurement.

Distance between two flat parallel surfaces is used for measurement.

 

Scale graduations marking are not subjected to wear.

 

End surfaces subjected to wear.

Quick and easy measurement.

Only one measurement at time. So, it is time consuming.

 

Limited accuracy of 0.2mm. It can’t use for close tolerance measurement.

High accuracy. Dimensional tolerance as close as 0.0005mm.

 

It does not has built in datum, so alignment with measurement axis difficult.

It has built in datum, so it is easy to align with measurement axis.

 

Parallax error can be occurred in measurement.

Not subjected to parallax error.

 

Its manufacture is simple and cost low.

Complex manufacturing process required. Cost is high.

 

Example: Meter scale, Yard, etc.

Example: Slip gauges, End bars, Gap gauges etc.

 

 

🔗Difference between material standard and wavelength standard


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Line Standard and End Standard of Measurement - Characteristics, Advantages and Disadvantages


What is line standard and end standard?

For accurate measurement, it is crucial to choose a suitable measuring device that suits the particular situation. There are mainly two methods for the measurement of distance. When the distance between two engraved lines is used for the measurement of length then it is called line standard or line measurement. They are used for direct length comparison, and they have no auxiliary devices. The most common line standard is the division marked meter rule.

Comparison Between Systematic Error and Random Error



🔗Systematic Error and Random Error in Metrology


The following table shows the difference between systematic error and random error


Systematic Error

Random Error

A replicable error that are consistently in same magnitude and direction.

Random in nature, magnitude and direction is unpredictable. It can be positive and negative.

Not easy to detect.

Easy to detect.

It can be assessed easily; statistical analysis not required.

Statistical analysis is required.

It cannot be eliminated by repeated measurement.

Can be eliminated by repeated measurement.

Characterization is not necessary.

Characterized by mean, standard deviation, and variance.

Routinely calibration of measuring instrument help to minimize the systematic error.

Calibration of measuring instruments does not affect random error.

Minimization of systematic error increase accuracy of measurement.

Minimization of random error increase repeatability.



Systematic Error and Random Error in Metrology and What Are the Reason for It


No matter how careful you are, there will always be an error in physical quantity measurement. This “error” is a part of measuring process. They are mainly classified into Systematic error and random error.


What is the systematic error in metrology?

The systematic error is defined as the type of error that deviates by a fixed amount from the true measurement. Systematic error is reproducible inaccuracy and that are consistently in the same direction. So, it cannot be eliminated by taking a large number of readings and then averaging them. But This type of error is controllable in both magnitude and direction, can be assessed and minimized by good analysis.