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Wall Plate Media Center Microphone Input 
Crestron QM-WMIC
 
Crestron Electronics, Inc. 
Addendum #1 for DOC. 6245 
•  Connect the ground wires to the Cresnet shield and connect the Cresnet shield at 
the QM-RMCRX to the chassis of the QM-RMCRX as shown in the following 
diagram. The QM-RMCRX chassis must be connected to an earth ground. In 
this instance, the Cresnet shield is not connected to Cresnet ground. 
Grounding QM-WMIC Using Cresnet Shield to Grounded Chassis 
QM-RMCRX
or
CP2, CP2E,
MC2E, MC2W, MP2, MP2E
QM-WMC &
QM-WMIC
24
G
Z
Y
CHASSIS TO
EARTH GROUND
Grounding
Wire
SHIELD
24 VDC
Line
Voltage
Electrical Box Isolated from Ground
 
NOTE:  When the Cresnet shield is used to connect the QM-WMIC to the Cresnet 
ground terminal of a PRO2, PAC2, AV2, or any other 2-Series control system whose 
chassis is already earth grounded, the grounding wire from the control system to 
earth ground is unnecessary (as shown in the following diagram). 
Grounding QM-WMIC Using Cresnet Shield to Grounded Chassis 
PRO2, AV2, or PAC2
QM-WMC &
QM-WMIC
24
G
Z
Y
SHIELD
Grounding
Wire
Line Power
Electrical Box Isolated from Ground
 
 
 
 
 
 
 
 
 
 
 
 
15 Volvo Drive   Rockleigh, NJ 07647 
02.04   
Tel: 888.CRESTRON 
 
Fax: 201.767.7576  
Specifications subject to  
www.crestron.com 
change without notice.