This Square Silicone Button PWM Controller is a satisfyingly-squishy, easy-to-wire PWM output button controller with three color power-adjustment statuses in red, blue, and green. A simple way to add a three-cycle power/PWM button and a colorful universal power symbol to your project. These were originally designed for controlling heating pad modules in wearable thermal vests, but we can think of more than a couple of ways to hack this for a DIY project.