This little plug plays a big role in everyday life. Using the mobile app, you can easily control home appliances by making phone calls and texting, making your home life smarter. Features: * Learning function: you can learn 5 groups of master numbers, with power-off memory function, you can learn master number by setting SMS and dialing ringtone. * State Selection: You can select the socket state by long pressing the SW button. * Real-time feedback: You can query the socket status by sending SMS to complete the check. * The sleeve is elastic, not loose, effortless and not deformed for long-term use. * You can remotely control your home electrical equipment at any time by SMS, dial or APP software, or check the status of the powered device for unlimited distance and unlimited time. * Widely used in industrial and agricultural applications, home control, station control, etc. Specifications: Material: PVC Color: White Model No.: SC1-GSM Communication: Based on GSM Network Working Voltage: AC 110-220V Working Current: 16A Max Load: 2000W GSM Frequency: 850/900/1800/1900MHz Operating humidity: 65% Operating temperature: -10~+55 Item size: 113 * 77 * 65 mm / 4.4 * 3.0 * 2.6 in Item weight: 150 g />Package size: 123 x 87 x 75 mm / 4.8 x 3.4 x 3.0 inch"