1Convenient to use, saving energy and eco-friendly. It is applicable to remote control of electrical power supply 2Two working modes, includes manual and remote control. Round button on interface is not only manual key but also learning keys of matching buttons on remote transmitters 3Adjustable two working modes, self lock is to match button with the same button of remote control, press once for open and another try for close. Interlocking is to match buttons with two different learning key, press one button for open and another 4Great for switching on/off hard to reach appliances and devices without built-in switches. It can also controlling appliances in inaccessible areas, or for people with limited mobility 5Can be used for wide range of applications, such as electrical appliances, lamps etc