Model:	DMT-9SMK-427-01	DMT-9SMK-427-03
Rated Voltage:	1.5 VDC	3 VDC
Operating Voltage:	1 VDC - 2 VDC	2 VDC - 4 VDC
Current Consumption:*	80 mA max.	80 mA max.
Sound Pressure:*	80 dB min.	80 dB min.
Coil Resistance:*	5.5 OHM	15 OHM
Coil Impedance:	abt 12 OHM	abt 45 OHM
Resonant Frequency:	2,731 Hz	2,731 Hz
Operating Temp:	-20 ~+ 60degree C	-20 ~+ 60degree C
Weight:	1 gram	1 gram

* Applying rated voltage (square wave, 1/2 duty, resonant frequency)
* Distance at 10 cm (applying rated voltage: 2,700 Hz, 1/2 duty, square wave) 
* Applying resonant frequency, sine wave, measuring current 60mA