A smart electricity monitor (300, 400) comprising: a housing (305, 405); a power switch (320, 420, 520) disposed on the housing (305, 405); an AC/DC converter disposed within the housing (305, 405); a power cord (315, 415) extending from the housing (305, 405) and terminating in a plug configured to engage with an AC outlet, the power cord (315, 415) electrically connected, within the housing (305, 405), in parallel to the power switch (320, 420) and the AC/DC converter; a plurality of AC outlets (310, 410, 530) disposed on the housing (305, 405) and electrically connected to the power switch (320, 420, 520) by a protection circuit (535, 540) and a relay circuit arranged in series between the plurality of AC outlets (310, 410, 530) and the power switch (320, 420, 520); a communication module disposed within the housing (305, 405) and configured to communicate wirelessly in an ad hoc network, the module being in electrical communication with an AC current sensor and the relay circuit, and wherein a heat sensor (340, 440, 555), a motion sensor (345, 445, 560), and the communication module are all electrically connected in parallel to the AC/DC converter to receive DC power therefrom characterized in that the heat sensor (340, 440, 555) is disposed on the housing (305, 405); the motion sensor (345, 445, 560) is disposed on the housing (305, 405); the communication module is configured to wirelessly communicate data produced by the heat sensor (340, 440, 555) and the motion sensor (345, 445, 560) to a server across the ad hoc network, whereby the communicated data indicate the presence of a user proximate to the smart electricity monitor, and the communication module is configured to wirelessly receive a control signal from the server across the ad hoc network in turn to the data provided by the communication module, and to control the relay circuit to electrically disconnect one of the plurality of AC power outlets (310, 410, 530) from the protection circuit (535, 540) in response to the control signal. a housing (305, 405); a power switch (320, 420, 520) disposed on the housing (305, 405); an AC/DC converter disposed within the housing (305, 405); a power cord (315, 415) extending from the housing (305, 405) and terminating in a plug configured to engage with an AC outlet, the power cord (315, 415) electrically connected, within the housing (305, 405), in parallel to the power switch (320, 420) and the AC/DC converter; a plurality of AC outlets (310, 410, 530) disposed on the housing (305, 405) and electrically connected to the power switch (320, 420, 520) by a protection circuit (535, 540) and a relay circuit arranged in series between the plurality of AC outlets (310, 410, 530) and the power switch (320, 420, 520); a communication module disposed within the housing (305, 405) and configured to communicate wirelessly in an ad hoc network, the module being in electrical communication with an AC current sensor and the relay circuit, and wherein a heat sensor (340, 440, 555), a motion sensor (345, 445, 560), and the communication module are all electrically connected in parallel to the AC/DC converter to receive DC power therefrom characterized in that the heat sensor (340, 440, 555) is disposed on the housing (305, 405); the motion sensor (345, 445, 560) is disposed on the housing (305, 405); the communication module is configured to wirelessly communicate data produced by the heat sensor (340, 440, 555) and the motion sensor (345, 445, 560) to a server across the ad hoc network, whereby the communicated data indicate the presence of a user proximate to the smart electricity monitor, and the communication module is configured to wirelessly receive a control signal from the server across the ad hoc network in turn to the data provided by the communication module, and to control the relay circuit to electrically disconnect one of the plurality of AC power outlets (310, 410, 530) from the protection circuit (535, 540) in response to the control signal.