This smoke-detecting alarm clock from Lifetone wakes heavy sleepers with sound and motion. It uses an innovative sensor which works by hearing existing smoke alarms then broadcasting a virtually impossible-to-ignore 520 hertz sound in order to wake even the dead! In case this extremely loud noise does not work, the alarm will shake the bed (this is not a joke). This cool modern bedroom gadget will detect T3 alarms through in multistory houses through closed doors and walls. What’s more, it functions as an everyday alarm clock. The price: just under $200.