I use the dimming feature on the Herpstat without issue on the output surge protectors. The surge protector prevents the current from reaching the flexwatt tape under pulse mode (I noticed it when the surge protector light started to flicker under that mode).
I run a surge protector to protect and power the Herpstat 2 and two surge protectors out with no problems for over a year. Btw, I use a Home Depot HDX Plastic Rack, and I tape the probe directly to the flexwatt facing the shelf side within a void to allow for a flat surface facing the tub.For each six outlet surge protector, I set one probe to one of the six flexwatt tapes being powered.
As a quick tip, you can place a stack of magazines or replace another tub on the probed flexwatt tape spot during a full clean to maintain temperature consistency among the other tubs.
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