General lighting information

How To Tell Counterfeit Money – (Protect Yourself From Counterfeit Notes)

How to tell counterfeit money for real, Protect yourself from receiving counterfeit US Dollars

One of the greatest concerns for most cash businesses is how to protect themselves from the losses incurred if counterfeit bills are accepted. Once in possession of fake money it has to be turned in to the appropriate authorities. Trying to exchange them is considered intent to defraud and is a punishable offence that may carry a fine or a prison sentence of up to 20 years.

There are a few methods that can be used to check for counterfeit notes, some more reliable than others. Shop owners should be wary of smaller bills too because not all fakes are in large denominations. Always check even smaller bills like the $10 and $20.


UV money checker

Manual Check of US Dollar Bills

These are the three most difficult things for producers of counterfeit money to reproduce and that you need to check for if you don’t have a UV checker.

1. Feel the paper

The currency of the US is printed on paper that is made from a mix of cotton and linen and feels completely different than paper, even as it ages. The money has a slightly embossed feel from the ink texture which is the result of what is known as intaglio printing. When running a fingernail across the paper the ridges can be felt, whereas money printed on normal paper will feel smooth.

2. Look for the security thread

Every bill has a security thread embedded in it and each denomination has it in a different position running from top to bottom. It may be on the left or the right, but the $100 bill has two and they are visible in light. The first one in the $100 is on the left of the figure of Franklin J. Roosevelt and the second is a three-dimensional strip in blue on the front of the note. When the note is moved the features move in the opposite direction, so if the note is moved vertically they move sideways and they move vertically if the note is moved sideways.

3. Look at the watermark

The watermark is very difficult to counterfeit and is obviously of poor-quality in fake notes. It is easily visible on the right side of each note and matches the portrait on each note. On the $5 bill it is a large “5”.


Using an Ultraviolet (black) light checker

fake money checker

The plastic strip in each denomination bill glows a different color under the UV light and the bill itself will not remain white under the light. The security thread in the $5 should glow blue; orange is the color for the $10, green for the $20; the $50 glows yellow, and the $100 pink.


Buying a UV bank note checker

Banks have sophisticated bank note counters that also check the banknotes for authenticity. These are rather expensive and smaller enterprises can buy some reasonably priced UV checkers that are very reliable. Prices vary from very expensive to reasonable and the most expensive models are not always the best. These are some of the best devices from all price ranges available on the market.

The Kolibri Bishop 2-in-1 Counterfeit Money Detector and Bill Counter with UV, MG and IR Detection This is a reasonably priced detector and has the added feature of being able to detect if bills have been bleached. Easy to use, it counts 1 bill at a time as it also checks them and it has an add mode that helps to keep count. Its compact and lightweight design allows it to be placed near a cash register and Kolibri offers technical support.

Dri Mark Flash Test Counterfeit Bill Detector with Ink, UV and Watermark Flashtest

how to check for fake money

This tiny machine is smaller than a smartphone, fits in the smallest of spaces next to cash registers and is economical. The ink sensor can test bills in less than a second and runs a triple check. The light flashes green and the machine will beep if the bill is fine. The ink test is the most popular because it is the fastest, but it does have the option for a watermark and UV light test. Since it is not battery operated, it is always ready and it also does not require maintenance and bulbs.



Dri Mark Products INC Counterfeit Triple Test Detector, 3X7X3 Inches


This product can be operated with 3 “C” batteries or an AC adaptor and is compact and portable. It detects washed bills and has a powerful UV LED light for detecting the security strip on $5 bills and above. It can detect security markings on all other US documents, cashier’s checks and money orders. It also comes with a Counterfeit Detection Pen. It has powerful LEDs that have a long life.


Safescan 50Ultraviolet UV Counterfeit Bill Detector


The powerful UV lamp has 3X longer lamp life and the reflector gives it extra UV light intensity. This machine is suitable for all currencies and does not only verify banknotes but also credit cards and ID cards.


Drimark UV Light, Counterfeit Bill Detector (UVProPlus-B)

This is one of the best pocket-sized counterfeit bill detectors on the market that can also be kept next to the cash register. The UV Pro can detect bleached bills and if used properly is almost 100% accurate, which is much more than other detection devices. It comes with the 3 AAA batteries and the powerful UV LEDs last for 10,000+ hours.


What to do in the event that a counterfeit bill is detected

Don’t show any reaction and don’t return the bill to the person.

⦁ Keep them preoccupied as you take note of a few details and if possible, the registration of the vehicle they are in.

⦁ Contact the local police or Secret Service.

⦁ In the meantime write your initials and the date in the white border area of the bill.

⦁ Place the bill in a protective cover until it can be handed over.

Always protect yourself by checking because a passed counterfeit bill becomes your problem.


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What is a COB LED – (Chip On Board LED Lights)

What is a COB LED?

The lighting industry is moving at a fast pace with continual new developments which are helping find solutions for many of our lighting needs. If you are wondering: “What is a COB LED?” then maybe we can help you understand.

what is a cob led

What is a COB LED Light?

Chip on board (COB) LEDs are relatively new on the market, but despite their brief history, they offer many benefits when compared to the standard options. The first lights which can be considered similar to COB packages made their first appearance at the beginning of the 21st century and are the SMD LED packages. The COB light as we know it now first became available in 2007 and was met with skepticism because of the small packaging which contained so much power.

Sometimes they are called “fried eggs” because when not lit they resemble them. This is because of the yellow phosphor circle which is mounted on a white board.

Multiple LED chips are bonded by the manufacturer onto a substrate to form a single module called a COB LED. Typically nine or more LED chips are used and they are mounted in such a way as to offer the highest potential of lighting possible. When a COB LED package is lit, it has the effect of a lighting panel as opposed to looking like multiple individual lights.

what is a led cob light

What are the benefits of COB LEDs?

The lumen output per square inch for a COB LED is greatly increased in efficiency because of the multi-chip packaging. The reason for this is that the globe with LED diode chips has far more light sources covering the same are of a traditional LED. In COB LEDs, the viewing angle is increased and the loss of light is decreased since the lenses and other traditional LED packaging components are eliminated.

Since fewer components are required per LED chip to function correctly, the multiple diodes are housed within the COB LED with a single circuit and two contacts which energize them.

The greatest advantage because of the reduced components and the elimination of the traditional LED chip structure package is the reduction of heat generated by each LED chip. The operational temperature of the COB LED is also lowered because of the calcium/aluminum substrate which is often coupled to an external heat sink because it is a higher efficiency heat transfer medium. In order for a COB to be used at its full potential, care must be taken when choosing a heat sink. It must be capable of dissipating the heat generated so that the COB LED will work at increased efficiency and with lower failure rates.

The fact that spot soldering of the individual LED diode chips is not necessary, since mounting is done directly onto the substrate, is another reason why COB LEDs have reduced failure rates.

The advantages in short:


High-Intensity at short distances

Simplicity of design

High-uniformity at close working distances

Increased life, stability and reliability

What are the disadvantages of COB LEDs?

They cannot be used to create color changing bulbs or lights because of their limited contacts and circuit. So they are only efficient in single color applications.

cob led light

Where are COB LEDs used?

The COB LED allows for heavy-duty applications, something which could not be done with LEDs.

There are a wide range of applications possible for COB LEDs and they could be used for higher output general lighting. However, their primary application would be as solid-state lighting (SSL) by replacing metal-halide lams. These are used for high-bay lighting, street lights, high-output track lights, and down-lights and are used in theatres and as grow lights.

In smaller applications we see COB chips in the flash of mobile phones and a point-and-shoot camera.



In conclusion

Almost every light source can be replaced with COB LED. They are the latest and most advanced technology in lighting existing on the market today. They are available in anything from a few hundred lumens to 30,000 lumens and can go up to 200 watts.

COB LEDS have proven to be a major step in LED lighting technology and have increased the capabilities of the power that can be included in the same size as an ordinary LED packaging. Their availability for all kinds of lighting situations has been increased by manufacturers who have produced a wide range of options for consumers to choose from.

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