100% Brand newThis module has short circuit protection.Widely used in DIY Mobile Power Supply, 5V output for charging Phone, MP3, MP4, PSP, etcInput voltage: 9V/12V/24V/36VOutput voltage: 5VOutput current: 3ASwitching frequency: 150KHZConversion efficiency: 92%Working temperature: -40 to +85 degree CentigradeColor: Photo ColorMaterial: PC+ metalSize: 59mm x 21mm x 17mmNote: 1.Do not put the probe towards sunlight. Sunlight will cause interference to module.2.Sensitivity should not be regulated excessively high because high sensitivity can easily lead to false trigger.Package Included: 1 * Step down moduleOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.