Wire Type 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-20A38WQ , PK-20N38WQ PK-20A38WQ PK-20N38WQ 3.8 ± 0.5 3~24 12 95 15 3~28 12 85 12 Unit KHz VDC VDC dB mA Constant 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