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QMX3...   Wall-mounted sensors and room operator units for KNX PL-Link, KNX S-mode and KNX LTE-Mode  CM2N1602en_07 
Siemens Building Technologies    2017-05-22 
Switches 
−  switching and dimming of lights 
−  control of blinds 
−  selecting and saving of scenes 
 
LTE can only use the sensor information of the types QMX3.P30, QMX3.P40, and 
QMX3.P70. 
 
Devices with CO
2
 measurement are not suitable for safety applications such 
as gas or smoke alarm. 
Mechanical design 
 
 
•  The devices are designed for wall-mounting (A). A conduit box is optional. 
−  Conduit box: Keep in mind the dimensions of the conduit box! 
−  Cable conduits on the wall: Keep a distance of 30 mm (from above) / 
20 mm (from below) to the base plate (B), so that the device (C) can be 
snapped onto the base plate. 
•  The base plate (B) has screw holes for all common flush-mount boxes.  
The screw head height must not exceed 3 mm. 
•  The device (C) incorporates a KNX / PL-Link plug, a tool plug, and, depending 
on the type, sensor element, keys, LCD panel, window for the label.  
The cable can be pushed into channels on the rear. 
•  A KNX plug is enclosed with the devices 
The optional metal-reinforced base plate QMX3.MP1 (B1) serves for two purposes: 
•  It is more rigid so that it does not bend when fixed in the middle with two screws 
only (directly over a conduit box or a cavity wall box). 
•  It has a removable gray foam plate (B2) for mounting on a 68 mm diameter 
cavity wall box. The plate compensates for the jutting edge of the box (see 
mounting, page 5). 
 
QMX3.MP1 is supplied in boxes with 20 pcs.