Demo of the FakeTV security device. Rough math suggests it will use $0.03 of electricity per month when on for seven hours per day.
V * A = W
(9v) * (0.15A) = (1.35W)
(1.35W / 1000) = (1.35*10^ -3 kW)
(1.35*10^ -3 kW) * (7 hrs per day) = (9.45 * 10^ -3 kWH)
(~$0.09/KWH) * (9.45 * 10^ -3 kWH) = ($8.505*10^ -4 / day)
($8.505*10^ -4 / day) * (30 days/month) = ($0.0255 / month)
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