LED traffic signs highway tunnel emergency call

LED traffic signs, traffic signs, highway signs, highway emergency telephone Features: 1. Slim tunnel photoelectric logo uses LED light technology, the use of optics, high-efficiency light guide, is a new tunnel flag . 2.LED light-emitting chips used in Taiwan high quality, transparent and strong, high brightness, life ≥5 million hours. 3. Using constant current circuit, LED life longer, more uniform light. The shell with aluminum frame, durable, invisible heat chamber, one solution to the problem due to the temperature rise associated LED light failure cause, but also fully embodies the perfect combination of lighting features and appearance. 5. Has a good waterproof. 6. The product complies << highway tunnel traffic engineering design specification >> of design standards. The main technical indicators: 1. Working voltage: DC 12V 2. Power: single ≤3W, double-sided signs ≤6W 3. Optical Brightness: ≥200 cd / M2 4. emitting surface: double-sided / single-sided 5.Viewing way: 24h straight light 6. Environmental temperature: -20 ℃ ~ + 65 ℃ 7. Humidity: 20% to 95% 8. Size: can be customized