Heater failure protection using Azoo micro
I'm not sure if people do this and I'm oblivious (didn't see a lot of references when google searching), but does anyone use something like the azoo micro controller as basic overheat protection? I recently had to purchase a new heater (went with an eheim jager for $21 since I've read good things), and I noticed a LOT of horror stories about heaters that failed and were stuck on, regardless of brand.
Basically I'd like to set the azoo at a temp slightly higher than what my heater would be set, so the only time it would cut power to the heater would be if the heater failed or malfunctioned. Ex: set the heater to 76 and the azoo to 78.
Anyone have experience doing this or something similar?