Description: Application for Bus, large trucks, motor car, solar power, bus display, taxi advertising screen, car audio, LCD TV, LED, intercom and monitoring system. Specification: Input voltage: AC 17V-26V DC 17V-40V Output voltage: 12V Output Current: 5A Rated Power: 60W Working temperature: -40? ~ 80?. Over temperature protection: Yes Overcurrent protection: Yes Short circuit protection: Yes Input reverse protection: Yes Dimensions: 80x45x25mm Package Includes: 1 Piece 24v to 12V Step-down Power Converter Module Note: Highly suggest skilled person to install it. Professional installation is highly recommended