1. Unable to control lighting when the touch switch module is broken.2. Inconvenient because you have to move to the switch when using the fixed touch switch module.3. Risk of loss and damage when using the touch switch module as a movable device.By securing the above problems, the existing touch switch module can be safely used for fixing,In addition, by making it easy to link with mobileYou can check and control the status of all lights connected to the GUGU touch switch even while lying in bed or in another room.[main function]1. If you enter the serial number attached to the touch switch module, the installation is complete.2. You can check the current status of lighting when running the application3. Up to 6 people can be registered so all family members can control the lighting4. All lights can be controlled at once with a full ON/OFF function5. There are various types of switches from 1 to 6, so you can select a wide range of switches6. A total of 6 GUGU wireless smart touch switches can be registered