ITEM NAME:3X DC Step-up Boost Module Converter USB Power Boost Circuit Board 0.9V 5V to 5V Product Description Description: Feature: Onboard ultra small PFM control DC/DC boost controller chip. Input 0.9V ~ 5V any DC voltage, can output 5V DC voltage stability. Onboard USB female, can be directly.Included: 3 x DC Step-up Boost Module. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item. Warranty Service. Mon. to Sat.
