MK-668B stands for unit

Energy conversion mode: capacitive

Frequency response: 80HZ-15khz

Directivity: single directional/super directional

Output impedance (ohm) : 1200 ω

Sensitivity: -35dB

SNR: 60dB

Equivalent noise level: 35dB(A)/ 20U Pa

Total harmonic distortion: 1%

Power supply voltage: system DC24V

Frequency response: 50-16 KHZ

Sensitivity: -42dB±2dB

Reference distance: 20cm-60cm

LCD display, Chinese and English language optional