This low voltage DC 5-24V LED controller box has 4-pin 2 port output, you can connect 2 rolls led lights. Work with most brand 4 pin 10mm 5050 2835 3528 RGB led strip lights remote replacement Control your led strip lights via phone APP / 24 keys IR Remote / LED Controller Box. After connecting with the smart phone via Bluetooth, the light strip colour not only dance with rhythm of music while you play music on your phone, but also the light will auto change when MIC capture ambient sounds Function: Voice Control, APP Remote Control, Dimmable, Compatible with Amazon Alexa Echo Google Home