Two side 3-color red/green/yellow lights.Lights include red, green and .Prewired quality Black wire is for , the other three are for negative. Each corresponds to the color of the glowing colors, the green is the green LED, the red is the red LED, the yellow is the yellow LED You can also connect with 5V transformer without circuit board, black wire with , and the other three with negative. Great accessories for , buildings, models Voltage: 5V Current: 60MA Power: 0.36W Color: Black Material:Plastic Application: Construction sand table model / DIY materials Package Content: 1* Light 1* control panel Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.