Display
15
16
UNDER
MAX MIN FAST SLOW
34
33
32
DATE
31
REC dBA
30
FULL dBC
29
28
27
No.
Designation
15
UNDER indication (i.e. fallen below measuring range)
16
MIN indication
17
FAST indication
18
OVER indication (i.e. measuring range exceeded)
19
SLOW indication
20
Indication of the scale's maximum value
21
Display of the measuring scale
22
TIME indication
23
Measurement value display
24
AUTO indication
25
HOLD indication
26
dBA / dBC indication
27
FULL indication (memory full)
28
REC indication
29
Battery status indication
30
Automatic switch-off indication
31
DATE indication
32
Time / date display
33
Indication of the scale's minimum value
34
MAX indication
EN
18
17
OVER
TIME
AUTO
HOLD
26
25
digital sound level meter SL400
Connections
19
20
21
22
23
24
No.
Designation
35
Connection for the power adapter (DC 9 V)
36
Mini USB port
37
3.5 mm jack *
38
Setscrew for calibration
* e.g. to connect a frequency analyser or recorder
35
36
37
38
5
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