Our three light dwarf signal comes with a green, yellow, and red LEDs installed (order dependent on style). HO scale is available in two styles: Classic and Chesapeake and Ohio Railway (C&O). Instructions included. Scale: HO. SKUs: H-850, H-850CO with a different light sequence. Three 300 ohm resistors are included.
| This unit is equipped with LED Solid State Lamps. Take caution to use the proper resistor with each wire. If you have a 12V DC power supply, you can use 1/2-watt resistors. | 
| Parameter | Red | Yellow | Green |  | 
| LED Voltage | 1.8 | 2.1 | 2 | Volts | 
| LED Current (recommended) | 40 | 40 | 40 | mA | 
 
         
       
           
         
           
           
           
           
           
           
           
           
           
           
         
            
           
            
           
            
           
            
           
            
           
            
          