Designed using authentic LEGO® pieces, this rail road crossing sign has realistic flashing LEDs already installed. Choose between USB or 9-volt battery to power the sign. About 12 inches of wire is included.
What is the difference between USB and Battery power?
USB Plug:
- The usb plug must remain plugged into a power source
- To turn lights on and off you simply plug in or unplug
- Potential power sources include, cell phone power bank, USB wall plug, Computer USB port
9-volt battery:
- 9-volt battery required (not included)
- Push button on the top to turn lights on and off