Add 2-Way ControlApart from APP control, the MINI light switch can also connect a pair of 2-way rocker light switches to turn on/off the downstairs light from upstairs.You can also track the devices real-time status anytime on APP. 3 Triggering ModesSONOFF MINI R2 smart switch support 3 triggering modes that pulse mode (works with push button switches), edge mode (Works with SPDT switches) and following mode (Works with switches with ON and OFF mark and sensors with dry contact output). APP Remote Control eWeLink APP enables you to control all SONOFF devices anywhere with one tap via iOS & Android smart phone, no distance limitation. The small and compact smart switch is used for different kinds of switch boxes, even the smallest EU standard switch box. NOTE:The router must be 2.4GHz (5.0 GHz WiFi is not supported). Hands-free Voice Control SONOFF MINI WiFi Switch is compatible with Amazon Alexa and Google Home Assistant. It allows you to use your voice to control home devices and enjoy hands-free experience. DIY ModeSONOFF MINIR2 wifi switch supports DIY mode (designed for developers) which allows users to integrate MINI R2 into worldwide third-party open source smart home control system to achieve LAN control without cloud service, such as Home Assistant, openHAB, ioBroker, etc.