Digital Monitoring Products Inc PC0124 User Manual

Page of 4
Digital Monitoring Products 
1105 Installation Guide
2
Mounting the Transmitter and Magnet Assemblies
For internal contact operation, the transmitter and magnet assembly should have no more than 1/2" space between
the assembled housings after installation.  When mounting on metal (ferrous) surfaces, this distance is slightly less.  
For door installations, it is recommended the transmitter be mounted on the door frame and the magnet assembly 
be mounted on the door.
Magnet Assembly
Only one magnet assembly is required for internal reed switch operation.  Depending on the installation 
requirements, either the Standard Magnet Assembly (Figure 3) or the Commercial Magnet Assembly (Figure 4) can be
used.   
Installing the Transmitter
The following instructions cover installing the transmitter  and magnet assembly. 
1. Remove the cover and battery if installed.  See Figure 1.
2. Hold the transmitter base in place with the reed switch nearest to the area where the magnet is to be
mounted.
3. Place two supplied #4 flat head screws into the mounting hole locations as shown in Figure 5 and 6 to secure
the housing to the surface. 
4. When using the standard magnet, place the magnet base on the surface nearest to the internal reed switch
location and use the provided #4 flat head screws to secure the magnet base in place. Snap the magnet into
the standard housing, then snap the housing onto the base.
5. When using the commercial magnet, snap the magnet into the commercial housing, then using the supplied #4
flat head screws, mount the magnet in the desired location.
6. Before replacing the cover, verify the internal tamper spring is on the tamper switch for normal operation.
Housing
Base
Magnet
Magnet
Housing
#4 Flat Head
Screws
Figure 3: Standard 
Magnet Assembly
Minimum 1/8” 
Mounting 
distance
Wall Mount 
Screw Holes
Standard Magnet Base
Figure 5: Transmitter and  
Standard Magnet
Minimum 1/8” 
Mounting 
distance
Commercial Magnet
Wall Mount 
Screw Holes
Figure 6: Optional  
Commercial Magnet
Magnet 
Housing
Magnet 
#4 Flat Head 
Screws
Figure 4: Commercial  
Magnet Assembly