Description 100% brand new and high quality Car power supply, simply enter this module powered car cigarette holder on the termination point, you can adjust the potentiometer, the output voltage can be adjusted in 1.25-30V for your cell phone, MP3, MP4, PSP and many other devices charging power supply is very simple and convenient. To be the electronic device power supply when the device needs 3-35V hands while the corresponding voltage power supply, with this module you can easily put the voltage to the desired voltage and solve problems. System operating voltage test, you can use this module to do the project when debugging a variety of voltage test system operating voltage range, very easy and convenient. Input: DC 3V to 40V (input voltage to the output voltage must be higher than the above can not boost 1.5v.) Output: DC 1.5V to 35V voltage is continuously adjustable, high efficiency maximum output current of 3A. Features: All solid capacitors using SANYO, 36u thick circuit boards, high-Q inductors with high power output LED indicator Note: working long hours is recommended for use in less than 2.5A current, while adding a heat sink (10W output above); Because it is the buck module, in order to ensure stable output, keep a minimum 1.5V dropout Specification: Input voltage: DC 3V~40V Output voltage: DC 1.5V~35V Output current: 3A(Max) Size: 45 x 20 x 14mm Package Included: 1x LM2596S-ADJ DC-DC Adjustable Buck Module Note: please allow 1-3cm errors to the actual dimension due to manual measurement! Thank you ! Realcolor may slightly differentfrom pictures due to computer screen's resolution, brightness, contrast etc. If you have any question, please contact us before leave negative feedback, we will try our best to serve you, thank you for your understanding! HOPE YOU HAVE A NICE SHOPPING!