Pin Type PK-27N35EPQ , PF-27N35EPQ , PL-27N35EPQ Model Number Resonant Frequency Operating Voltage Rated Voltage Sound Pressure Level(Min) Current Consumption(Max) Tone Sweep(Pulse)Rate at Rated Voltage(Hz) ± 20 % PK-27N35EPQ PF-27N35EPQ PL-27N35EPQ 3.5 ± 0.5 3.0~28 12 90 at 30cm at Rated Voltage 15 at Rated Voltage Constant Fast Pulse 3.0 Unit KHz VDC VDC dB mA Slow Pulse 1.2 Operating Temperature -20～+70 ℃ Storage Temperature -30～+80 ℃ DB LECTRO Inc. 3755 Place Java, Suite 140, Brossard, Québec, J4Y 0E4, Canada - T: 1-450-444-1424 / F: 1-450-444-4714 / www.dblectro.com