• Model NO.：3.9mm, 4.8mm, 6.2mm
• System Operating Platform：Win XP, Win 7, Win 8, Win 8.1
• Display Type：LED Video Display
• Application：Stage Performance, Advertising, Shopping Guide
• IP Rating：IP40
• Certification：CE, RoHS, UL, CCC, ETL
• Delivery Time：15~20 Working Days
• Warranty：2 Years
• OEM：Yes
• Cabinet Size：500X500mm
• Brightness：>1200nits
• Refresh Rate：>1500Hz
• Color：Full Color
• Weight：8kg
• Transport Package：Flightcase
• Specification：CE ROHS, ISO9001
• Trademark：BST
• Origin：Shenzhen China
• HS Code：8528591090
• Production Capacity：3000sqm,Month

ModelIRD-3.9Pixel Pitch3.9mmUnit Size500mmx500mmLED TypeSMD2121Pixel / Unit128*128Unit Weight7.5kgViewing Angle(H/V)140°/140°ApplicationStorage-40~60° C,   Working-20~50° CProtection Level(Front/Rear)IP40/IP21Power Consumption(AVG.)320w/m2Driving1/16 ScanFrame Refresh≥ 60HzRefresh Rate>1500HzProcessing16bitBrightness>1200nitsPower SupplyAC 110/220±10%,  50~60HzMTBF≥ 1, 000 HoursLife Span≥ 100, 000 HoursPixel Failure< 0.0003

1.  What is LED?
LED is sanded for Light Emitting Diode, a kind of semiconductor which is used to give and receive the electronic signal into infrared rays or light, using the characteristics of compound semiconductor. This is used for household appliances, remote controller, electric bulletin board, various kinds of automation appliances.

2. What are Pixel Pitch, Pixel Density, LED QTY, and Pixel Configuration?
Pixel Pitch is the distance between neighboring pixels.
Pixel Density is the quantity of pixels per square meter.
LED QTY is the quantity of LED lamps per square.
Pixel Configuration is the description of the consistency of a pixel, for instance, we use 1 red lamp, 1 green lamp, and 1 blue lamp to compose a pixel, the pixel configuration is 1R1G1B.

3. What are LED Type, Module size and Module resolution?
LED Type is the description of LED lamp, for instance, the brand, the shape in physical, the size of the lamp, etc.
Module size is the measurement of a module.
Module resolution is the number of pixels per module.

4. What is Drive Method, driving IC and Power supply
Drive Method: always we use static, 1/4 scan, 1/8 scan, 1/16 scan, the latter one contributes to less brightness than the former. We always use the static outdoor, and use the different kinds of scan indoor.
Driving IC is the generic term for several kinds of IC, that are used to control the LED lamps, and as a bridge between the control system and lamps.
Power supply: a kind of device that used as a transfer from 220V AC into 5V DC. It always seems like a box in the cabinet.

5. What is viewing angle?
Viewing angle is the maximum angle at which a display can be viewed with acceptable visual performance. It includes horizontal viewing angle and vertical viewing angle.


Why choose BST?
BST is a professional manufacturer of LED display screens over 8 years. We have strong R&D to ensure high end products with user-friendly design .
The prices are very competitive due to our large-scale procurement of raw material.   We can help you to win more orders if you are distributors.End users will also be satisfied with our quality and price.
We have CE, FCC and Rohs certificates. Our products are exported over 85 countries .We have rich experience in handling all possible problems when you import goods from China .
We have a wide variety of products for you to choose from .All products are strictly tested before release to market and we test every LED screen 72 hours before delivery.
Our sales are well trained to offer professional advice on your specific projects. Processional engineers are on standby, can offer guidance, on site technical support as requested.
We offer 2-3 years warranty and life time maintenance .Even when warranty time expires , we only charge material costs