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Z-wave-water-heater-thermostat, that's funny, i was just looking over the elk 9200 last night thinking to myself what else i could use that for besides my hot water heater (central hvac emergency shut off?)... and i also stumbled upon the evolve lfm-20 wondering what i could connect that thing to, perhaps make a z wave controlled robotic lawn mower, how about a z wave controlled roomba?