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KY-012 aktív hangjelző riasztó érzékelő modul, barkács indítókészlet
KY-012 Active Buzzer Alarm Sensor Module Diy Starter Kit
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1. Buzzer: The buzzer is an integrated electronic structure of Xiangqi, DC power supply, widely used in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers, etc. A sound generating device for an electronic product.
2. Buzzer Category: mainly divided piezo buzzer and two types of electromagnetic buzzer.
3. Buzzer circuit graphic symbols: the buzzer in the circuit by the letter „H” or „HA” (the old standard with the „FM”, „LB”, „JD”, etc.), said.
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