Twist the 3 ground wires alongside one another in the 1st box and secure them having a wire nut. Then, link the tip on the shortest ground wire for the inexperienced terminal on the switch. Generally, smart light switches will work with any light — incandescent, LED, halogen, and fluorescent. https://troylfxjd.blogerus.com/56863929/how-smart-light-switches-can-save-you-time-stress-and-money