Electrical Characteristics
Installation:	PIN
Dimensions (mm):	∮28.2*19.5
Voltage (V):	12VDC
Max Current(mA):
Control Voltage(V):	4~15VDC
Frequency (Hz):	2800±100
Tone:	B2数字版S音
SPL (dB):	90@30cm

Others
Operation Temp.(℃):	-20~70