●?Kindly Reminder - If product doesn’t work or you have more questions, just let me know, and we’ll be happy to help! ●??No-Fuss Installation - This is easy and is plug and play.Watch the installation video, you can quickly complete the installation independently ●??High Sensitive - High-density plug with better conductivity ●??Good compatibility - it is also compatible with AC voltage,Either tab can be positive or negative in DC