© 2014 RailMaster Hobbies TCS Keep Alive KA1 - Hard wire for power 2-5 seconds - $22.36 KA1-C - Two pin connector for power 2-5 seconds - $26.36 KA2 - Hard wire for power 6-15 seconds - $21.56 KA2-C - Two pin connector for power 6-15 seconds - $25.56