SL30 Emergency Vehicle (SL30)Realistic multi flashing blue light which can be fitted under the roof light of a model emergency vehicle. Adds life to a scene! Smart Lights are a new kind of light which you can easily fit inside buildings, trains, vehicles or other parts of your layout which light up your models with the lighting effects of your choice! Each Smart Light is only 1cm square and just 2 wires connect it to almost any low voltage supply. If you have a digital layout you can control it using a simple DCC accessory command (even if it is on board a moving train!), but just as easy to power from a 12V DC power pack or a 9 volt battery! • Small 1 x 1 x 0.3cm - fits in or under most models • Just 2 wires which plug in - no soldering • Power by standard 9-18V DC or a battery • Or by DCC which can also control some effects • Just connect and go - no setting up required • Fitted with Self adhesive pad for easy mounting