No.

Item

Unit

Specification

1

Construction

Open

2

Using method

Transmitter/Receiver

3

Nominal Frequency

Hz

40K

4

Sensitivity

空空空空空空空空空空空空空空空空空空空空空空空空空空空空空空空空空空 ≥-75dBV/μMbar

5

S P L

dB

空空空空空空空空空空空空空空空空空空空空空空空空≥105 (10V/30cm/sine wave)

6

Directivity

80deg

7

Capacitance

pF

2000±25%@1KHz

8

Detectable range

m

0.2….6

9

Operating Temperature

℃

-20….+80

10

Housing material

Al