CHARACTERISTICSPartnumberTCT12K40T-1TCT12K40R-1ConstructionOpenstructuretypeOpenstructuretypeUsingMethodTransmitterReceiverCenterFrequency40.0 1.0KHz40.0 1.0KHzSoundPressureLevel112dBmin.----------------Sensitivity-----------------70dBmin.Capacitance2500Pf 20%2500Pf 20%MaximumInputVoltage20Vrms20VrmsDirectivity80 15 (-6dB)80 15 (-6dB)OperatingTemperature-20℃~+70℃-20℃~+70℃StorageTemperature-40℃~+85℃-40℃~+85℃OUTLINEDIMENSIONS(UNIT:mm)