Feature:This module is not BUCK.Make use of imported integrated switch ultra-thin regulator module manufacturing process and synchronous rectification technology so as the conversion rate is more than 96%, what's more, calorific value is extremely low.This module is poted by epoxy so it's waterproof, shockproof, moistureproof, anti-dust and flame retardant.The module boasts of automatic protection function when over voltage, over current, over temperature and short circuit braking and restore normal work after the conditions.Specification:Input Voltage: DC 8V ~ 22VOutput Voltage: 5VOutput Current: 3A MaxOperating Temperature: -40°C ~ +85°CLength of in-out wire: 10cm ~ 13cmColor: BlackSize: 4.6 x 2.7 x 1.4cmWeight: 45gApplication:It can be used for LED car display, GPS, MP3, MP4 car DVD, hard disk player and the stereo.Note:It can't be used for iPhone, iPod, Tablet GPS navigation, Tachograph, USB speakersPackage included:3 x 12V to 5V dual USB DC charger converter module