Compact 3-volt power supply designed for CR2032 button cell batteries with an integrated on/off switch mounted directly to the battery holder. Powers up to 10 LED lights simultaneously. Connect red wires from your lights to the red wire on the power supply and green wires to the black wire. Secure connections by soldering wires together or twisting tightly, then cover joins with shrink tubing for durability. Perfect for miniature lighting projects, dollhouse displays, and craft applications requiring reliable, switchable power.
