Review on 🔧 DIY LED U-Home 3Pcs DC3V-35V Variable Voltage Regulator PWM Speed Controller Switch Dimmer for Single Color LED Strip Light SMD5050/SMD5630/SMD3528 by Matthew Bell

I'm glad I only needed 3 of these to adjust the brightness of my LED under counter lights in my kitchen. Soldered the second before testing and found that it died. The light comes on but there is no output from the device. I soldered it, soldered the next one, it works fine. I've been using them for about a month now and they're still working fine. No humming, no humming, no noise either from the device or from my power supplies (power supply 3A 12V DC, bought from Amazon, the usual cheap ones in a metal housing and with screw connectors for power in/out). FYI, I've load tested my LED strips, the longest draws only 2.4A, which is well below the advertised 5A maximum.