Green light on vivarium electronic thermostat

Just hooked up my ve 200 to my rack unit 10 minute's ago and It has a flashing green light not rapid but continuous then it will be on steady then back to flashing again. SP is set to 93 probe is at 93 I have it set to proportional.
So....
My question is this normal? Just double checking also probe is exactly in the same position as helix probe was..

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Yes, the green light shows hen power is applied to heat source. Flashing is normal.

I just picked up a 300 series and it has the same flashing light. I have it plugged into a power strip and that light blinks too, just short pulses of power for more accurate heat control.