Dealing with the right people and having the right product isn t always. enough in an ever changing and competitive market. Service and support are

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2 Established in 1997, Shenzhen Retop Optoelectronics Company has built a team that engages in the development, production, sales, service and support in the LED industry. We have developed a client base located around the world. Working together to develop a finished product to fit your needs or that of your client. Our factory has expanded to form Retop LED Display Company Limited to service the Asia, Europe and Middle East markets and along with Retop LED Display Corporation to service the North American markets. Strategy, research and development are so important in the LED industry. Products are always changing, Virtual Pixel Sharing and Viewing Angles are just to mention a few. Today we offer Indoor Full Color Video Displays ranging from 6mm SMD to 12mm LED, bright enough to be seen under full commercial lighting. We also offer Outdoor Full Color Video Displays ranging from 10mm LED to 40mm LED bright enough to be seen in full direct sunlight. High Definition displays are another area we include in all our projects, with Flicker Free processors tried and tested to be one of the best. Other products include Indoor Bi-Color Dot Matrix, Indoor Bi-Color SMD and Outdoor Bi-Color screens. Our state of the art software is very User Friendly helping with hassle free training. Dealing with the right people and having the right product isn t always enough in an ever changing and competitive market. Service and support are also important, and let s not forget about our outstanding warranty. Leading in these areas helps us to work within your budget concerns.

3 LED (Light Emitting Diode) LED, short for Light Emitting Diode, uses solid semiconductor chips as light emitting materials. When positive voltage is attached to both ends, the current particles in the semiconductor will blend together and release super fluous energy, which elicits photon eradication to produce visible light. Application With its inherent characteristics like electricity savings, long life-span, shaking durability, quick responding and luminescence source, LED s are widely applied in the fields of indicator lights, signal lamps and display screens. We can find its application everywhere in our daily life, such as home lighting, telephone sets, panel lighting, car fog lights and traffic lights. Classification

4 LED Characteristics 1. High Light Emitting Efficiency After decades of technological improvements, LEDs are making great advancements in light emitting efficiency. Incandescent lamps or halogen lamps are L/W, florescent lamps are L/W, sodium lamps are L/ W, much of the electrical consumption has become wasted. The light efficiency of upgraded LED can reach L/W and with its great performance and narrow spectrum, it can emit colored visible light directly without filtration. At present, nations throughout the world are all accelerating the research of improving LED efficiency, and a greater improvements in the field will be made in the near future. 2. Less Electricity Consumption LEDs are driven by direct current, has a single-tube power of W, a single-tube driver voltage of v and a current of 15-18MA, which is quick in reaction and easily managed under high frequency. To achieve the same luminance effect, it consumes only one tenth of electricity as an incandescent lamps. 3. Long Life-Span LEDs have a life span as long as 100,000 hours, which is dozens of times longer than ordinary lamp tubes. With small volume, lightweight and encapsulated in epoxy colophony, it can endure mechanical impact and vibration. 4. High Credibility LEDs claim a low heat, zero caloric radiation, luminescent source and low voltage, which can be touched safely. No harmful elements like hydrargyrum or natrium are contained. Its built in micro-processing system ca control light emitting strength and adjust emitting mode so as to realize a combination of light and art. 5. Environment-Friendly Product No harmful elements are contained in LEDs. With no pollution, its castoff can be reclaimed. 6. Wide Applicability LEDs are a solid luminopher, which is shake resistant and not easy to crack under impact. Since its illuminants are small in volume and thus can be arranged at will, it is easy to assemble into a portable illuminating product, and the installation and maintenance is also very easy.

5 Dot Matrix Module Outdoor display module Indoor Cabinet Outdoor Cabinet

6 Classification 1. Application Indoor LED Screen Indoor LED screens have moderate luminance, wide viewing angles and vibrant blended colors. They are light weight and their high density makes them suitable to view at close range. Outdoor LED Screen Outdoor LED screens have a high luminance, far distance of blended colors and high grade of protection. They are suitable to view from a far distance. Construction Of LED Screens Independent cabinet structure is adopted, which is combined at will, easy to install or dismantle, and applicable for both indoor and outdoor use because of their waterproof and anti-ultraviolet design. 2. Color Capability LED Monochrome LED Monochrome Screen consists of LED Lamps of one color, only displaying one single color such as red, green or orange, etc. LED Bi-Color Screen LED Bi-Color Screen consists of LED lamps of red and green, which, with gray scale of 256 for each color, can display 65,536 colors. Real LED Full Color Screen Real LED Full Color Screen consists of LED lamps of 2 reds, 1 green and 1 blue, displaying white balance. Virtual LED Full Color Screen Multicolor display screen consists of LED lamps of 2 reds, 1 green and 1 blue, displaying white balance and 16,777,216 colors, 4 times higher than the real image of the same size in resolution. 3. Display Function Graphic LED Screen Graphic LED display screen can display text, graph and photos either online or offline. Video LED Display Screen Video LED screens can display different kinds of information simultaneously with real time, including a variety of video frequency information, such as two-dimensional or three-dimensional cartoons, TV programs, movies and live shows.

7 4. LED Type LED Dot Matrix Screen LED Dot Matrix Screen, usually for indoor application, consist of LED modules which pack LED wafers in the dot matrix plastic sets. LED SMD Screen LED SMD screens are a new technology developed in recent years. SMD (surface mounted device) is created by assembling LED chips into transparent plastics. By decreasing size, extending viewing angles and reducing weight, it makes a perfect application, especially for indoor screens. LED Lamp Screen LED lamp screens pack wafers in a cup-shaped epoxy colophony mantle, its two pins consist of LED lamps whose two conducting wires are the anode and cathode respectively. This kind of LED display is applicable in a wide field. LED Screen Formation First, pixel dots are assembled into a display module, then the display modules are assembled into a display cabinet, and finally assembled into a LED display screen through a random combination of cabinets. A LED screen is a large display system, which combines micro-electronic technology, computer technology and information processing technology. For its vivid color, wide dynamic field, high luminance, long life span and stable performance, LED screens are widely applied in advertisement, securities, information transmission and news information. LED screens are becoming more and more outstanding in electronic media and the most advanced display media in the world at present.

8 Indoor Full Color Screen 1. Indoor Product Introduction Indoor screens include SMD LED lighting, which has the widest viewing angle, but low luminance. Semi-SMD LED lighting has a wide viewing angle and a brighter luminance, and LED lamp screens which have a smaller viewing angle but a highest luminance. 2. Indoor Application of Products Indoor screens boast brighter colors, increased viewing angles (extending to 160 max), lightweight and simple structures. The LED screen is widely applicable at sports centers, exhibition centers, museums and large indoor venues. 3. Gallery

9 4. Specifications of Indoor Full Color Screens LED Type 3-in-1 SMD 3-in-1 SMD LED Lamp LED Lamp LED Lamp Model P6 P10 P8.38 P10 P12 Real Pitch (mm) Virtual Pitch (mm) LED Shape 3-in-1 SMD 3-in-1 SMD ø 3mm Flat Top Lamp ø 4mm Oval Lamp ø 5mm Oval Lamp Pixel Configuration 1R1G1B 1R1G1B 2R1G1B 2R1G1B 2R1G1B LED Wavelength (mm) 625/525/ /525/ /525/ /525/ /525/470 LED Brightness (mcd) 240/480/80 240/480/80 150x2/600/ x2/1200/ x2/1200/200 Viewing Angle ( ) 160/ / / /40 120/55 Module Configuration W x H (pixels) Module Dimension W x H (mm) Real Pixel Density (pixels / m 2 ) 16x16 32x16 32x16 16x16 16x16 96x96 320x x x x Drive Mode 1/8 1/4 1/8 1/8 1/8 Brightness (cd / m 2 ) >1500 >1200 >1500 >2500 >2000 Average Power Consumption (W / m 2 ) Maximum Power Consumption (W / m 2 ) Dimming Levels (auto / manual) Color Temperature Colors Color Processing Levels 16/100 levels K (adjustable) 16.7 million, 24 bit RGB 8192 (13 bit) Contrast Ratio LED Refresh Rate Display Refresh Rate LED Driving Mode Power Source Certifications 1000:1 360 Hz Hz Constant Current 110/220V 50/60 Hz UL/CE Operating Temperature (ºC) Operating Humidity Internal Protection Rating Data Transfer Range Life Expectancy (½ brightness) -30ºC (-22 F) to +60ºC (140 F) < 95% R.H. IP43 CAT 5 Cable: 100 m Fibre Optic: 15 km 80,000 hours

10 Outdoor Full Color Screen 1. Outdoor Product Introduction Outdoor screens boast super high luminance and are resistant to water and wind. 2. Outdoor Application The screens is widely applicable at city squares, outdoor sport arenas and high traffic areas which require high luminance. 3. Gallery

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12 4. Specifications of Outdoor Full Color Screens 1 LED Type LED Lamp LED Lamp LED Lamp LED Lamp LED Lamp LED Lamp Model P10 P12.5 P16 P20 P22 P25 Real Pitch (mm) Virtual Pitch (mm) LED Shape ø 4mm Oval Lamp ø 4mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp Pixel Configuration 1R1G1B 2R1G1B 2R1G1B 2R1G1B 2R1G1B 2R1G1B LED Wavelength (mm) 625/525/ /525/ /525/ /525/ /525/ /525/470 LED Brightness (mcd) 500/1000/ x2/1200/ x2/1200/ x2/1800/ x2/1800/ x2/1800/300 Viewing Angle ( ) 100/40 100/40 120/55 120/55 120/55 120/55 Module Configuration W x H (pixels) Module Dimension W x H (mm) Real Pixel Density (pixels / m 2 ) Virtual Pixel Density (pixel / m 2 ) 32x16 16x8 16x8 16x8 8x8 8x8 320x x x x x x200 10, ,600 15,625 10, Drive Mode 1/4 1/2 Static Static Static Static Brightness (cd / m 2 ) >6000 >6000 >7500 >6500 >5500 >4800 Average Power Consumption (W / m 2 ) Maximum Power Consumption (W / m 2 ) Dimming Levels (auto / manual) Color Temperature Colors Color Processing Levels 16/100 levels K (adjustable) 16.7 million, 24 bit RGB 8192 (13 bit) Contrast Ratio LED Refresh Rate Display Refresh Rate LED Driving Mode Power Source Certifications 1000: Hz Hz Operating Temperature (ºC) Operating Humidity Internal Protection Rating Constant Current Data Transfer Range 110/220V 50/60 Hz UL/CE Life Expectancy (½ brightness) -30ºC (-22 F) to +60ºC (140 F) < 95% R.H. IP65 CAT 5 Cable: 100 m Fibre Optic: 15 km 80,000 hours

13 5. Specifications of Outdoor Full Color Screens 2 LED Type LED Lamp LED Lamp LED Lamp LED Lamp LED Lamp LED Lamp Model P25b P26 P30a P30b P38 P40 Real Pitch (mm) Virtual Pitch (mm) LED Shape ø 5mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp ø 5mm Oval Lamp Pixel Configuration 4R2G2B 2R1G1B 2R1G1B 4R2G1B 4R2G2B 4R2G1B LED Wavelength (mm) 625/525/ /525/ /525/ /525/ /525/ /525/470 LED Brightness (mcd) 450x4/1800x2/ 300x2 450x2/1800/ x2/2200/ x4/ 1600x2/ x4/2100x2/ 350x2 525x4/2100x2/ 350x2 Viewing Angle ( ) 120/55 120/55 120/55 120/55 120/55 120/55 Module Configuration W x H (pixels) Module Dimension W x H (mm) Real Pixel Density (pixels / m 2 ) Virtual Pixel Density (pixel / m 2 ) 8x8 8x8 4x8 4x8 4x8 4x8 200x x x x x x Drive Mode Static Static Static Static Static Static Brightness (cd / m 2 ) >7000 >4500 >4000 >5500 >4600 >4200 Average Power Consumption (W / m 2 ) Maximum Power Consumption (W / m 2 ) Dimming Levels (auto / manual) Color Temperature Colors Color Processing Levels 16/100 levels K (adjustable) 16.7 million, 24 bit RGB 8192 (13 bit) Contrast Ratio LED Refresh Rate Display Refresh Rate LED Driving Mode Power Source Certifications 1000: Hz Hz Constant Current 110/220V 50/60 Hz UL/CE Operating Temperature (ºC) Operating Humidity Internal Protection Rating Data Transfer Range Life Expectancy (½ brightness) -30ºC (-22 F) to +60ºC (140 F) < 95% R.H. IP65 CAT 5 Cable: 100 m Fibre Optic: 15 km 80,000 hours

14 Bi-Color Screen 1. Indoor Bi-Color Dot Matrix Screen Specification of Indoor Dot Matrix Screen Formation Application Bi-Color Dot Matrix has easy processing, convenient installation and economical cost. It s applicable at airports, hospitals, banks, and other public sites.

15 2. Indoor Bi-Color SMD Screen Product Information Indoor Bi-Color SMD LED display screen are newly developed and manufactured with higher luminance and enhanced viewing angle using SMD LED lighting and more advanced unit panel design. Specification of Indoor SMD Screen Formation Application Boasting high luminance, brighter color, increased viewing angle (extended to 160º max), lightweight and simple structure, the product is widely used at sports centers, exhibitions and large indoor venues.

16 3. Outdoor Bi-Color Screen Product Introduction Outdoor screens boast super high luminance and are resistant to water and wind. Specification of Outdoor Bi-Color Screen Formation Application Unparalleled as public multi-media this display is especially used for outdoors. The product is widely applicable at city squares, sport arenas, high traffic areas which require high luminance.

17 System Characteristics 1. Four times clearer than an ordinary LED screens by applying pixel-sharing technology, enabling it to display unparalleled refined graphics Bit RGB is one of the most advanced control systems, enabling a vivid presentation of image and graphics in perspective. 3. Adjustable brightness and gray scales with 100 levels of brightness with manual setting, twenty-four hour presets and sunlight based automatic adjustments. 4. No multi-media card is needed. Support direct connection with the video card auto brightness sensor and DVI interface in the computer. Transmitting distance: 100 meters using a CAT 5 cable or up to 15 kilometers using fiber optics. System Software 1. Control Software LED Manager LED Manager enables such functions as; resolution settings, real/virtual mode shifting, contrast ratio adjustment, frame position setting, brightness adjustment, auto environment dimmer, black screen.

18 2. Play Software - LED Easy Show Features of LED Easy Show include 1. Combining advanced DirectX graphics technique and Flicker Free display to ensure streaming graphics and video. 2. Design scheme is similar to power point software. 3. Display sources include animation, graphics, video and text. Including support of graphic files, video files, txt files, rtf text files, flash files and logging in to the live broadcast on the internet. All display sources can be set to have special effects and accompanying sound. 4. Short movies editing through this software can be saved as individual files for playing. 5. Applicable to one computer controlled display and support of TCP/IP, serial interface, dial communication, thus long distance display control is achieved. Support display of more than one LED screen. 6. Enable normal play list setting, and preset or inserted file playing. Structure of the System 1. Multimedia System Speaker LED Screen Speaker Display Card Network Card Computer Audio Card Amplifier Computer Network PC Monitor Video Card Computer Devices TV Video Devices DV

19 2. Control System Structure Connected to the Next Scanning Board Date Input/Output Scanning Board LED Screen Transmitter CAT 5 Cable CAT 5 Cable / Fibre Optic Receiver DVI Computer Server (back end) Serial Receiver KM Port Transmitter Display Card Scanning Board Physical Index 1. Pixel Pitch Distance Between the middle of two adjacent pixels.

20 Optics Index 1. Brightness of LED Screen The average luminance of LED screen at the normal direction. Unit: cd / m 2. Under the same pixel pitch density, the brightness of LED screen depends on the material, packaging mode and size of LED wafer applied. The bigger the wafer, the higher the brightness; contrarily, the lower the brightness will be. 2. Viewing Angle When the luminance at the horizontal and vertical directions is respectively half of the luminance of LED display screen at the normal direction, the angles between either of the two directions and the normal line are called horizontal viewing angle or vertical viewing angle respectively. Normally ± is used to indicate degrees of the two viewing angles. 3. Vertical Viewing Angle All the spectators can enjoy the best visual effect when a display screen has a horizontal viewing angle of 120 degrees and a vertical viewing angle of 45 degrees. Out of this scope, the spectators can receive a visual effect more than half lower than the normal brightness. The wider the viewing angle of the LED screen, the more spectators it can hold and wider scale it can cover; contrarily, narrow scale it will cover. The packaging mode of LED wafer decides the size of viewing angle of LED screens, among which, the viewing angle of SMD LED lamp is better and so is the horizontal viewing angle of elliptic LED single lamp. Viewing angle is inverse ratio to brightness.

21 Installation 1. Indoor Screen Indoor screens can be installed in a variety of ways. They can be suspended, inlayed or placed on a base.

22 2. Outdoor Display Screen Outdoor screens can be installed in a variety of ways. They can be suspended, inlayed or placed on a base. Structural Steel Frame Display Wall

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24 Dallas, Texas USA Vancouver, BC Canada Shenzhen, China RETOP (73867)