So I bought one of these on Amazon at the full price a couple of months ago. I can't work our the difference between the ISV100w and the ISV200w. It's not power as they are both 1000w.
I just saw thin in the listing:
ISV-100W and ISV-200W have water shortage protection.
But 200W has dry protection additionally.
So 200W has double prodections.
ISV-200W solved the problem of water droplets on the screen when you cook.
ISV-200W price: $94.52 or $92.16 with eBay Plus.
ISV-200W is smaller but LED screen is bigger to view.
ISV-200W has dry protection. If water has all boiled away, the device will automatically stop working.
ISV-200W has larger controlling temperature range 0℃~90℃