Model:	DMT-09-01	DMT-09-03	DMT-09-05
Rated Voltage:	1.5 VDC	3 VDC	5 VDC
Operating Voltage:	1 VDC - 2 VDC	2 VDC - 5 VDC	3 VDC - 8 VDC
Current Consumption:*	80 mA max.	80 mA max.	80 mA max.
Sound Pressure:*	85 dB min.	85 dB min.	85 dB min.
Coil Resistance:*	5.5 +/- 1 OHM	25 +/- 4 OHM	40 +/- 5 OHM
Coil Impedance:	15 OHM	35 OHM	80 OHM
Resonant Frequency:	2,731 Hz	2,731 Hz	2,731 Hz
Operating Temp:	-25 ~+80degree C	-25 ~+80degree C	-25 ~+80degree 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