Model:	DMT-9SEH-527-01	DMT-9SEH-527-03	DMT-9SEH-527-05
Rated Voltage:	1.5 VDC	3 VDC	5 VDC
Operating Voltage:	1 VDC - 2 VDC	2 VDC - 5 VDC	4 VDC - 7 VDC
Current Consumption:*	80 mA max.	80 mA max.	80 mA max.
Sound Pressure:*	90 dB min.	90 dB min.	90 dB min.
Coil Resistance:	5.5 OHM	25 OHM	40 OHM
Coil Impedance:*	abt 12 OHM	abt 45 OHM	abt 60 OHM
Resonant Frequency:	2,731 Hz	2,731 Hz	2,731 Hz
Operating Temp:	-25 ~+ 70degree C	-25 ~+ 70degree C	-25 ~+ 70degree C
Weight:	0.8 gram	0.8 gram	0.8 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