Siren Sound Integrated Circuits - HK620

 6 sirens ( ki ki ki ...alarm , oo oo
   oo..alarm , fire engine, ambulance 
   siren , police car 1 , police car 2 ) 
   available .
 Built in 1 LED flash output for 
   sound out indication . 
 Trigger mode by level hold  type .
 6 alone sound output from 6 alone
   trigger pins touched .