... AC/DC adaptor , with the plug suit to different countries input : 100 to 240V AC 50/60 hz , working on ... 12V DC3. Life span of led: more than 50,000 hours. warranty : 1 years4. ... available.5. Application: for single sided , indoor use. Widely use in lift , hotel , restaurant, supermarket, Mall,bakery, airport, Station , ... double sided light boxes 4025/slim light box use in bank