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Features: 1) Structure (two types): a) Rectangle b) Roundness 2) Display digit (two types): a) Two digits: display digit from 00 to 99 changeable continuously b) Three digits: display digit from 00 to 199 changeable continuously 3) Factory standard: Q/3201/GLL107-1998 Characteristics: 1) The CSLS adopts the new AlInGaP yellow LED with high reliability under sunshine and humidity and ultra high brightness to display the digits, and red LED to display the outer circle 2) The luminance of digits reaches 30,000CD/m2 and the system reliability MTBF is more than 30,000 hours, which far exceeds the optical fiber product 3) The luminance can be adjusted automatically or manually according to the environment brightness 4) Saves power: power consumption is 100-150W 5) Penetrates fog: adopts ultra high brightness yellow LED 6) Displays flexibility: any digits (0-99) can be set and displayed 7) The system is easy to install and has good ability of rain and wind resistance 8) Special designed product, very cold type can work under the temperature from - 40°C to 60°C Modes and specifications: 1) LPS-2B1500-YR3-C 2) LPS-3B1560-YR2 3) LPS-2BΦ1300-Y1 4) LPS-2B960 x 710-M1 5) LPS-2B960 x 710-M2 6) LPS-2B960 x 710-M3 For example: LPS-2B1400-YR3-C 1) LP: first character of Nanjing LOPU Corporation 2) S: abbreviation of signs 3) 2B: digit, 2 bits 4) 1400: outer size (mm) (rectangle: length x width, square: length of side, circle: diameter) 5) YR: color, M: multicolor, R: red, Y: yellow 6) 3: serial number of product designing 7) C: feature: default, normal, C: very cold type, R: enhanced type Main technique parameters: 1) Interface: RS232, RS422 2) Operating temperature: common -20~50°C, frost resistance -40~60°C 3) Protection grade: common IP43, enhanced IP65 4) Luminance: 30,000CD/m2 5) Visible distance: 300m 6) Power consumption: 100-200W 7) Relative humidity: 95% 8) Mean time between failures (MTBF): 30,000 hours