Kasa Smart Wi-Fi Plug Slim, Energy Monitoring, HomeKit, 4-PackSPEC: 2.4 GHz Wi-Fi required, 100-120 V 60 Hz, 15 A maximum load FEATURE: HomeKit-enabled; energy monitoring; compact design; Google Seamless setup(GSS); Amazon Certified for Humans (FFS); Kasa Smart app; works with Alexa, Google Assistant, and Samsung SmartThings; remote control; schedule; timer; away mode; group control; set scenes; no hub required; easy setup; UL certified