The ecozone also does the same as the herpkeeper but you don't need the extra net module it has it on board.
http://ecozonevivarium.com/products-...ntrollers.aspx
herpstats are fine if you have a pure seine wave generator. All Honda units are I am not sure if there are others. To work with the triac it needs to be. Ecozome uses a different controller I am not sure what it would do with mod seine wave inversion. It might be worth the time to find out. The best and safest system would be an auto switching inverter to the back up the good units switch fast enough the power is not really off at all.