Description: Lights include red, green and amber bulbs. Prewired quality products Voltage: 5-6V, current: 60MA, power: 0.36W is for positive, the other three are for negative(each line corresponds to the color of the glowing colors, such as green line glows green) You can also connectwith5Vtransformer without circuitboard, with positive, three with negative. Great accessories for diorama, buildings, train models Specification: Height: approx. 70mm Package Includes: 3x Traffic Lights 1xMicrocircuit board