Shields against RFI (radio frequency interference) from the digital transmitter
Electronics are insulated against temporary infiltration of liquids
Directional charcteristic: omnidirectional
Frequency range: 50 - 20,000 Hz
Sensitivity: 17.8 m V/PA (-35 dB, 0 dB = 1V / PA)
Max. SPL (sound pressure level): 127 dB
180 Ohm