The Thermo Cube is an added control to the dog bowl. The device does not prevent freezing. It cuts off electricity when temperatures are above freezing. Consider the fact that the heated dog bowl will not work forever. The thermostatic control device inside can fail. It can fail and remain in the on position or off. My coffee makes usually fail every so often and the thermostats usually are in the constant on position. The coffee is hotter than 7734. I toss the coffee maker and replace. The thermostatic control in your dog bowl is based on the same technology, but different temperature range. Nothing lasts forever.
Please note that I state... " I still like to use it with a Thermo Cube"
I never say you must use a Thermo Cube.
A comparison would be an automobile with seat belts and air bags. You can have with one or the other , or none at all. It is best to have both.
Another comparison may be the the power strips used for appliances, ETC. They have a reset breaker in them. It is an added feature not totally necessary since your electrical panel already has fuses/circuit breakers.
Please note that I state... " I still like to use it with a Thermo Cube"
I never say you must use a Thermo Cube.
A comparison would be an automobile with seat belts and air bags. You can have with one or the other , or none at all. It is best to have both.
Another comparison may be the the power strips used for appliances, ETC. They have a reset breaker in them. It is an added feature not totally necessary since your electrical panel already has fuses/circuit breakers.