12 VDC In Line Buzzer
Par un écrivain mystérieux
Description
For DC operation electric strikes & magnetic locks, Adds a buzz to alert the person at the door that the strike has been released
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5PCS EGBO Alarm Buzzer DC 12V 85dB Mini Electronic Alarm Buzzers Constant Tone
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Buzzer Basics - Technologies, Tones, and Drive Circuits
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