All our smart home products use Global Server, which is very stable and easy to access. As long as your smart phone has 2G/3G/4G/WiFi network, you can control all your home appliances in your palm from anywhere at any time. Description Rate Voltage: 100-250V Power Adapter: Without Power Adapter Features: Control mode: Mobile APP; Transmission mode: Wi-Fi communication; Controlled lines: 1; Control distance: infinity; Power: 10A/2200W; Platform: Android, iOS; Working temperature: 0-55 degree Parameter selection 5pcs Sonoff smart switch Features - Support WiFi network. - Support status tracking, home appliances status timely feedback to your App. - Support remotely turn on or off added devices. - Support Max 8 timing tasks for each added device. - Support numerous WiFi smart switches one smart phone. - Easy installation, easy handling and can be activated immediately and stably.