After few days of use, now i/we can say for sure, this device has OVERSTATED it's rating . In our case we find it safe with 1210 Watts ( 11A ) or lesser Watts load device . We measured power consumption of a heater (purchased from Walmart), by using a digital meter (also purchased from Walmart), heater uses 1416 watts (at 117 V AC 60 Hz) at "High" mode . When we use that heater in received Smart Plug/Socket, it becomes hot !! but this Smart-plug suppose to support 15 A !! and safely support 15A . that means, it suppose to support 110 Volt X 15 Amps = 1650 watts loads , without failing . But connecting that heater/load makes this Smart-Plug .. hot , which i/we consider to be unsafe hot for a home for longer multi hours use , so we have put 1-STAR REVIEW for this item, for now, as it has overstated its actual ratings . But if seller starts to supply actual 15A rated smart-plug , then we will change this review . From Walmart we also purchased other Smart-Plugs .. also rated 15 A , but that/those do not become hot like this smart plug , when same heater/load is connected to it . As we said earlier, after few days of usage observations on different Smart-Plugs , under different room temperatures, etc , we are sure about this one . But its good for loads under (1210 watt) 11 Amps in home for continuous multi hours usage.