5V Wireless Active Electro Magnetic Buzzer For Computer , Continuous Tone

5V Wireless Active Electro Magnetic Buzzer For Computer , Continuous Tone Magnetic Buzzer Quick Detail: Size: D9.6mm*H5.0mm Rated Voltage: 5VDC Operating Voltage: 4-7VDC Rated Current: Max. 30mA at 5VDC SPL: Min.80dB at 10cm Input 5VDC Resonant Frequency: 2700+/-300Hz Continuous Magnetic Buzzer Description: buzzer Electro-Magnetic Transduer with build-in oscillating 5V Buzzer 9.6mm Electro-Magnetic Buzzer Magnetic Buzzer Specification: 1.Magnetic Buzzer Technical Parameter