SIREN ALARM SIMULATES STAR TREK RED ALERT

  
Inside:
Repository
The signal starts at a low frequency, rises for about 1. 15 seconds to a high frequency, ceases for about 0. 35 seconds, then starts rising again from a low frequency, and so on ad infinitum.
SIREN ALARM SIMULATES STAR TREK RED ALERT - schematic




Leave Comment

characters left:

New Circuits

.