Sonoff 8 Button Remote Controller RF433 is an advanced version for 4 button RF with 433MHz. Designed with 8 buttons to perform various functions in running on different types of devices. Such as fan speed adjustment, brightness setting, etc. The simple and stylish look gives any surface a beautiful decor when it is stored on the wall. Pairing with your devices is extremely simple and takes no time at all, simply press any button on the remote controller to pair with the D1 and IFan control or RF Bridge. Quick installation. You are able to add any other accessories within the range at will to expand into more advanced automation. It�s Fully upgradable with no investment loss, easy integration and the widest range of products available. Does not require an electrician, simply follow a simple step by step guide.