Battery Holder for 2 x 1.5V AA Cell with Cover and On-Off Switch Double USB When an electric appliance is

When an electric appliance is in operation

This is the TLP626-2 IC optocoupler manufactured by Toshiba

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

vehicle lights

Battery Holder for 2 x 1.5V AA Cell with Cover and On-Off Switch Double USB When an electric appliance isThis 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