how to make lights on christmas tree blink

To make the lights on a Christmas tree blink, you will need to purchase a string of lights with a "blinking" setting. Once you have the string of lights, you can use the control switch to change the settings and choose the blinking option. The blinking setting will cause the lights to flash on and off at a set interval, creating a blinking effect. You can adjust the speed and intensity of the blinking by changing the settings on the control switch.