KY 004 replacement switch is a family oriented button switch module designed for easy replacement in home settings. It serves as a straightforward replacement switch module, featuring an easy to operate button for convenient use. Key benefits - Easy replacement: simple to install as a direct replacement switch module in household installations. - User friendly: button is easy to access and operate, suitable for all ages. - Family focused: designed with family use in mind, combining simplicity and reliability. Key attributes - Model: KY 004 - Type: replacement switch module - Design goal: easy to operate button for household switching Use scenarios - Replacing a worn or faulty wall switch in a living room lighting fixture. - Updating a hallway or bedroom switch to improve ease of use and accessibility. - Installing in a family space where a straightforward, reliable button interface is preferred.