Battery Holder for 2 x 1.5V AA Cell with Cover and On-Off Switch Double USB SMD 2835 LED strips can

SMD 2835 LED strips can be easily cut and connected to one another as required

Product Spacers / Standoff Type Male to Female Thread Thread Size M3 Material Brass Quantity 1 Male Spacer Size 5mm  Female Space Size 20mm

When an electric appliance is in operation

This is M3 Hex Nut 2mm height with coarse thread

This is the TLP626-2 IC optocoupler manufactured by Toshiba

Battery Holder for 2 x 1.5V AA Cell with Cover and On-Off Switch Double USB SMD 2835 LED strips canThis is a Black Plastic Storage Box Case for 2 x 1. 5V Battery Cell Box, with Cover and On Off Switch. This holder has a On Off switch which can be used to control power to your system. Cover provides the protection to the battery. The case box can keep your batteries organized and protected. The holder case is designed with leads for easy to solder and connect. This battery holder case is perfect for the devices need a 3V external battery. Battery