I had the same problem on both my 4way switches. It only happened on output 1. I have neutral wire. I found that if I put in the capacitor they provided (for the new neutral wire deployment) between output 1 and the neutral, the flickering did not happen.
I had the same problem on both my 4way switches. It only happened on output 1. I have neutral wire. I found that if I put in the capacitor they provided (for the new neutral wire deployment) between output 1 and the neutral, the flickering did not happen.
same problem I have in my house