When deciding which Bridgewerks Power Controller is best for you, use this simple guide:

1. Do you have one track or two tracks to power?
   • One-track units include:
     • The Morrison (3 amps)
     • SR5 (5 amps)
     • SR15 (15amps)
     • 20SRM
   • Two-track units include:
     • 200R
     • 220RM
2. How much power do you need?The length of the track is not the deciding factor. The amount of power is determined by the amount drawn from the track.
   • Each motor in the engine = 1 amp (large USA trains with 2 motors will take 2.5 amps)
   • Each lighted passenger car = 1 amp (unless the cars are using LEDs)
   • Smoke = 1 amp
   • Sound = 1 amp
   • Any accessories (switches, lighted buildings etc.) = 1 amp

   Add up your amps used and give yourself a little extra for expansion.

3. Do you prefer gauges to LED bars for Amp and Voltage readouts?
   • Units with gauges (single track) – 20SRM.
   • Units with gauges (2-track) – 220RM.
4. Do you want to be able to use a remote?
   • All units with an “R” in the title will take our RC-100 Remote (ex: SR15, 20SRM)