You can animate appearances.Animate the intensity of the emissive material.Set it to 0 and the lamp is off.
To add to Peter's comment just make sure your times are really close together so you simulate ON/OFF condition. You can create some pretty amazing flickering as well...
Thanks all. This worked fantastically.
Thanks for the tips, Peter & Alen! You both are spot on.
I created a very simple Visualize project with an emissive appearance animating within a sphere...kind of like a turn signal on a car.
Feel free to dissect the timeline to see how I've animated the appearance to blink.
Also attached is the resulting brief animation.
Product Manager | SOLIDWORKS Visualize