Electrical Characteristics
Installation:	PIN
Dimensions (mm):	∮12*9.5
Voltage (V):	5VDC
Max Current(mA):	30mA
Control Voltage(V):	4--7VDC
Frequency (Hz):	2400±100
Tone:	单音B628 S音.mp3
SPL (dB):	85@10CM

Others
Operation Temp.(℃):	-20~70