Circuitron 800-5510 SD-1 Signal Driver Hobby Tools Woodland Scenics DPM 35500 HO

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Circuitron 800-5510 SD-1 Signal Driver Hobby Tools Woodland Scenics DPM 35500 HOCircuitron 800 5510 SD 1 Signal Driver Logic and output drivers to control any 3 lamp, 3 color block signal. Will power LED or lamp type signals. LED type requires common positive (anode) connection of all LEDs. Detection circuits (such as BD 1) are needed for a minimum of three blocks to display all three aspects. 10 18V DC input. Circuitron Electronics for Model Railroads.