JTD433GR 2PCS Model Railroad Train Signals 2-Lights Block Signal 1:43 O Scale 12V Green-Red Traffic Lights for Train Layout New;

Features:
100% Brand new and high quality.Perfect for Railway & Building Layout!
Great accessories for diorama, buildings, train models.
Prewired quality products.Lights include red and green LEDs.Each line corresponds to the color of the glowing colors, the green line is the green LED, the red line is the red LED.
Black wire with positive, and the other two with negative.
You must connect a resistor in series before you will use them on 12V or 16V, I will supply compatible resistors for free.
Specifications:
Brand:evemodel.
Size: Please see the picture.
Style:Green,red.
Reference Scale: 1:43,Suitable for O scale.
Operating Voltage: 12V, AC or DC Compatible.
Operating Current: 20mA.
Material: Plastic.
Package included: 2 complete lamps,including 2 Resistors for 9~18V operation.