circuitron 5510 sd-1 tri-color signal controller
$19.95
Availability:
In stock
SKU
8005510
Circuitron -- 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.
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