Model:	DMT-11B
Rated Voltage:	1.5 Vp-p (DC)
Operating Voltage:	1 VDC - 2 VDC
Current Consumption:*	30 mA max.
Sound Pressure:*	70 dB min.
Coil Resistance:*	15 +/- 4.5 or 50 +/- 15 OHM
Coil Impedance:	40 OHM
Resonant Frequency:	2,048 Hz
Operating Temp:	-20 ~+60 degree C
Weight:	1.5 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