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DC12V 5020 Double Ball Cooling Fan with XH2.54 2P 25CM Cable Size:50*50*20MM Piezo Buzzer (Big) expect 20 30 meters effective range expect 20 30 meters effective range The module employs frequency hopping spread spectrum technology to minimize interference and ensure reliable communication in crowded RF environments DC12V 5020 Double Ball Cooling Fan with XH2 54 2P 25CM Cable Size:50*50*20MM
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