4
MUTE FUNCTION
1
MIC 1 Input Jack
and
Chime Button
have the highest level of priority. Input signals from
2
them can override other input signals. The grade of this
MUTE
function can be adjusted.
3
4
5
6
7
8
9
PRECAUTION OF INSTALLATION
10
11
1.
Do not block ventilation holes.
12
2.
The amplifier should not be placed in any of the areas:
13
1)
with poor ventilation;
14
2)
exposed to direct sunlight;
15
3)
with high ambient temperature or adjacent to heat-generating equipment;
16
4)
with high humidity or heavy dust;
17
5)
susceptible to vibration.
18
3.
Make sure the power outlet conforms to the plug of the unit.
19
4.
Do not use this unit if the electrical power cord is frayed or broken.
20
5.
Always operate the unit with the ground wire
21
6.
If a short alarm rings after turning on power and inputting signals, there must be an
22
output short circuit fault. In such case, power should be cut off immediately. Do not
23
turn on the power until the fault is removed.
24
25
26
27
28
29
30
31
MUTE
MIN
MAX
