You can use APP or messages to the GSM switch to control the electrical appliances. The device supports the 900/1800 frequency bands which is used in Europe. You must enter password if want to operate and control it, safety. Socket control type: SMS /APP/Button Built-in microcomputer chip; it works in any places with GSM/4G. Full of power off memory function to electrical appliances continue to work after outages. Built-in GSM antenna; easy carrying. Working range is within 110V-220V AC voltage, can not be used in cars, or other voltage environment. Great to control home and industrial electric appliances, like , water pump, air-conditioning, electric doors, lights, etc. Input voltage:110-250VAC Rated Current:16A Temperature:-40 - +110 Power fail alarm Application: Wireless remote water pump. Control the rice cooker in the office. Wireless control lights, fans. Wireless control power, audio and other equipment. Feeding the family pet via the GSM switch. Other household or industrial control applications. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC220V Specifications:A:SC1-WLTE-TVCX Color:As Shown Material:plastic Package Contents: 1 * Smart Plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.