User manual
QT ZM66M
User Manual
User Manual
Q-Tech Commercial Series
QT ZM66M
7
Rear Panel Layout 
24V DC Power Supply8. 
24V DC power connection with secure screw  
for a potential external power transformer.
The 24v power supply should be used when  
the distance between the QT ZM66M and the 
QT ZM66 exceeds 50m.
When the distance between the QT ZM66 and  
QT ZM66M is greater than 50m, we must use 
the 24V DC power input
Volume9. 
Volume control output 
Treble10. 
Adjust treble response. Rotate clockwise to  
increase treble output and anti clockwise to 
reduce it 
Bass11. 
Adjust bass response. Rotate clockwise to  
increase bass output and anti-clockwise to 
reduce it
Chime12. 
Chime Volume Control 
ID Console13. 
Dip-switches for microphone base ID (from 1  
to 6)
Line IN14. 
Rj45 port for connection to QT ZM66M. Two  
wires are used for 24 Vdc power provided by 
QT ZM66M, two wires for the data bus 485 and 
3 wires for 0dB microphone signal.
Link OUT15. 
Connected to the next QT ZM66M 
8
9
10
11
12
13
14
15
P OW E R
24V DC
C HIM E
V O L U ME
T R E B L E
B A S S V O L U ME EID C O N S O L
L IN E  IN
0 10
-10 +10
-10 +10 0 10
1
2
3
1   G ND
2   G ND
3   +2 4 D C
L IN K O UT










