While Sense is very good at detecting appliance states and energy use, a UL1699 listed AFCI (Arc Fault Circuit Interrupter) is what you really need to detect arcing problems and disconnect the circuit in question before a fire starts. There will be no cool web pages or graphics of the current waveforms to view, but you will be protected. Conventional circuit breakers can only protect a circuit if the current goes above the rating of the circuit, so at least 25A for a 20A circuit. GFCIs (Ground Fault Circuit Interrupters) will provide people protection, and also can provide arcing protection where the fault goes to ground. But only Combination AFCIs will detect and protect you from all arcing faults.
I work for Square D, but you should be able to find an AFCI at your local Lowes, Home Depot, or Menards for what ever brand of electrical panel you happen to have. I highly recommend you do this.
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