Check the listing for details. Arc Welding Simulator for Model Railways Trains Layouts, Dioramas. Condition: New. Listed at 19.92 USD. The arc welding simulator is perfect for creating animated and realistic scenes on your model railway layout, perfect for eye catching exhibition layouts! The simulator uses white and blue LED’s to give a bright pulsating light imitating an electric arc welder. This is effect is achieved by electronics giving a random length of flashes, and a random length between flashes. This is coupled with a timer that has the simulator start up with a couple of slower flashes, flash continuously for around 14 seconds, and then turn off for around 3 seconds. This cycle repeats endlessly provided that power is still connected. Suitable for model railway layouts of any scale, or any other kind of dioramas6-20V smooth DC, can be used with a 9V batteryReverse polarity protectionLow power consumptionOverall dimensions: 27mm x 22mm x 10mm (L x W x H)