Question about Vivarium Electronics Thermostat

[MDT]

I finally got around to getting my enclosures on a thermostat. I got the Vivarium Electronics VE-300. So far, so good. Keeping temp in the enclosures spot on. I've also got the night drop set which is a nice feature.

My question is this...I am using the "proportional heating" option. The indicator light on the unit is blinking on and off. I am assuming this is the "pulse" aspect of the unit...brief bursts of energy to keep the element at a constant temp? Like I said, I've never used a thermostat before, so I wasn't sure. the directions are spotty at best so I thought I'd ask the experts...

Thanks guys for any input..