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Tunnel variable speed limit signs use LED as the light source for both the content on the outer ring and the middle numeric characters. When the outer ring is illuminated, it appears red, and when not illuminated, it is black or colorless. The middle numeric characters can emit light in yellow, green, or red (selectable among the three states), with a display bit width of 2.5, capable of showing numbers ranging from 000 to 199; when not illuminated, they are black or colorless.

Main technical parameters:
(1) Display size: Overall dimensions (length × width × thickness) mm: 800 × 800 × 90;
(2) Displayed numbers: 000-199;
(3) Outer ring display: Can be displayed or turned off separately;
(4) LED wavelength: Red tube 625nm ±5nm, green tube 525nm ±5nm;
(5) Luminous intensity: ≥8000cd/m²;
(6) Chromaticity performance: The display base is matte black, and the entire screen appears black when not illuminated;
(7) Brightness adjustment: 32-level brightness, with separate adjustment for the outer ring and inner area;
(8) Brightness adjustment modes: Three modes: ambient adaptive/manual/software-fixed;
(9) Display angle for numbers and outer ring: 30°
(10) Control system: Industrial-grade control system with built-in watchdog design;
(11) Communication methods: RS232/RS485, TCP/IP (optional for customization);
(12) Applicable power supply: AC220V×(1±15%)V, 50HZ×(1±2%)HZ;
(13) Operating temperature: -40℃～＋55℃; Relative humidity: ≤98%RH;
(14) Protection level: IP65.

Mobile: +86-199 2326 7977

Tel: +86-023 6276 6779

E-mail: sales@chuangdi88.com

Speed measurement screen 03

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Leading LED intelligent transportation solutions are committed to improving the operational efficiency and management level of transportation systems, serving smooth and safe public transportation and sustainable economic development.

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4th Floor, Building B, Danguiyuan Industrial Community, No. 5 Danlong Road, Nan'an District, Chongqing, China.

Tel：+86-023 6276 6779

Tel：+86-19923267977

E-mail：sales@chuangdi88.com

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