DC-DC Converter Auto Step-Up Step-Down Module

From the shop's description

Color: Red – Output voltage (1.25V~26V arbitrary value) is independent of the input voltage (input 3.5V~28V arbitrary value), automatically step-up / down – LM2577S + LM2596S dual chip – Step-up mode: Input: 3.5~28V; output: 1.25V~26V – Output voltage is independent of the input voltage (input 3.5V~28V arbitrary value output 1.25V~26V any value) – Step-down mode: – Maximum current input: 3A – Maximum current output: 3A – Rated input: 1A – Rated output: 1A – Packing list: – 1 x Step-up step-down solar power supply module