Eight cassette decks act as one. They sing harmoniously with one another until a viewer approaches an individual deck. This deck, wired with an electronic eye, sees the intruder becomes distracted and falls out of tune with its peers.
Eight cassette decks act as one. They sing harmoniously with one another until a viewer approaches an individual deck. This deck, wired with an electronic eye, sees the intruder becomes distracted and falls out of tune with its peers.