uxcell® DC 24V 3 LED Red Green Yellow Lamp Industrial Signal Tower Light

This wires up with no issue. Be sure you're supplying enough juice. I ended up buying SMAKN® DC 24V/1A 24V 1A Switching Power Supply Adapter 100-240 Ac to power it. I ripped the end off, wired the lights to a JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM, wired it all up on a breadboard, and connected a leftover Raspberry Pi 2 I had on hand. I wrote a little program to send signals to the relay bank via GPIO output. Tada! Automated light signaling.I did need to add a bit of resistance to the green and red lights in order to get them to be around the same brightness as the yellow. This is no problem as they were way brighter than necessary and the yellow was at a good level.

I thought I could just plug this in and I could manually adjust the lights. That is not how this works. Not sure how I was supposed to use this. I returned it.

Fast shipping, good construction, works as designed!I used this to fabricate a green/yellow/red signal light to go outside my office. I used a switch from Amazon, a 24v ac adapter, and made position 1 hot with a 12v adapter, then bridged ports 1, 3, & 5. I then placed the lead from each light on 2, 4, & 6. This worked as intended, allowing one light to go on per switch position.

Good quality for the price.