1.7V to 1.1V / 1V Output DC-DC Buck Step Down Power Module Lithium Battery Voltage Regulator Board Replace AA AAA Dry Battery

High-concerned chemical : none Supply Voltage : Input DC 3.0V~4.2V Application : Replace AA/AAA dry batteries, electronic toy power supply Type : 3.7V Input Fixed 1.5V / 3V Output DC-DC Step Down Buck Power Module Brand Name : NoEnName_Null Origin : Mainland China Condition : New Operating Temperature : -40℃ ~ +85℃ label:yes