HO Scale Auto-Reversing Kit with AtlasTM end Track (other Track also available) This HO scale auto-reversing kit works in DC mode includes the modified end track with diodes soldered across cut gaps to control the current flow. The components of the kit are 1) A programmable DPDT Relay Board to set the travel and stop time of your locomotive or trolley in both directions. 2) 2 pieces of HO Atlas code 100 nickel silver track with a rail gap cut on one side and a diode soldered across the gap to restrict current flow at the stop zone ends of the track. (Also available as Code 83 Atlas HO Brown track, Brass HO Track (used), Bachmann (TM) EZ Track Black or Grey (used) and LifeLike (metal used). If required send a note with your order . There is no additional charge. 3) A 9 Volt Battery Holder with a switch used to power the relay board. (Battery is not included). Use a 9 Volt Alkaline or rechargeable battery only. 4) An adapter Plug that allows for the use of a 6-12 Volt DC power source wall unit instead of the battery to power the board. 5) Complete Instructions for setting up this system on your layout . Instructions and details are available at modeltrainsounds.com Project 16. NOTE: Additional requirements include (1) the point to point track layout you wish to use. (2) A train controller using variable 0-14 VDC output. 3) Your traction locomotive or trolley. 4) Wires to connect the controller to the relay board and to the track. If using other track manufactures such as HO E-Z track, Kato track with a road-base included you can add a base to this Atlas track or use a separate kit that does not include the track which is also available on eBay at our Store. BUY IT NOW $34 Plus $5.50 Shipping via First Class Mail