z-stuff dz-1011ho dwarf 2-color signal

Z-Stuff -- DZ-1011HO Block Signal Detectors -- HO Scale -- The DZ-1011 Block Signals Detectors are dwarf-style block signals that feature red and green LEDs and function both as a signal and as an optical detector of passing trains. Multiple units can be connected so signals change from green to red simultaneously. • Realistic scale proportions • Optical detection of train on adjacent track • Realistic, long-life, red and green LED signals • Can be used as block signals and as train detectors • Can be used with DZ-1008 Relay Module to operate other accessories • Connected units change to RED simultaneously when train is detected.