Simplex 556-693-RC
Simplex 556-693-RC
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Simplex 556-693-RC Oscillator Control Board with Pre-Amp Mixer
Oscillator control and audio pre-amplification board for Simplex fire alarm systems. Handles tone generation and audio mixing functions in analog audio systems. This is a professionally reconditioned unit.
Key Features:
• Function: Oscillator circuit with pre-amplified mixer for audio management
• Audio Processing: Pre-amp mixing stage for audio signal conditioning
• Status: Professionally reconditioned replacement part
• Integration: Works with analog audio modules in Simplex control panels
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