Features: . Perfect for railway layout and building! Made of white LEDs. Complete with wires and leds and can be illuminated. These lanterns are only suitable for use at a supply voltage of 3V. Do not use them directly on 12V or 16V to avoid damaging the LED. You need to connect the resistor in series, before you use them on 12V or 16V, I will provide compatible resistors for free. Please apply the correct working current of 20mA to each LED. Specification: Size: As the picture shows. Reference scale: 1:87, HO scale. Working Voltage: 3V, AC or DC compatible. Working Current: 20mA. Material: Steel Column Model Lampposts. Emitting Color: Warm White. Package Included:10 complete with us lamps.10 resistors (not pre-soldered) for 9 - 18V operation