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Cleveland Medical Devices Inc.                   RatPaak™ User’s Guide
 
 
 
The RatPaak™ system consists of a transmitter and receiver operating in the ISM frequency band (902 to 
928 MHz).  This device has been type certified by the FCC and therefore the user does not need a license.  
There are 256 possible frequency settings or channels selected by the manufacturer.  The RatPaak™ default 
is channel 148 or a frequency of 916.5312 MHz.  The Receiver has a 110 kHz bandwidth. 
 
Warning: 
Other equipment may interfere with the RatPaak™, even if that other equipment complies 
with emission requirements. 
 
Inserting or Replacing the Batteries 
The batteries need to be put in the first time you use your RatPaak™  Insert each #675 battery into one of 
the three battery compartments of the battery holder; making sure that the positive (+) side is facing 
upwards. 
 
Warning:  
It is important that the batteries are installed with the proper polarity.   
 
Warning:
  The isolation and safety of the patient is assured by battery operation.  The powering of the 
Transmitter by any other means is NOT RECOMMENDED. 
Harness 
A harness is provided with the RatPaak™ as a 
means to secure the RatPaak™ and batteries to the 
subject.  The harness has two fitted pockets.  The 
batteries should be stored in one pouch of the vest 
and the battery holder in the other pouch.  
Wires 
The RatPaak™  has multi-colored wires 
protruding from the transmitter.  Two of these 
wires, the black and red wires, are attached to 
both of the RatPaak™ and the battery.  These 
wires should be routed over the subject’s back as 
the devices are being placed in the pockets of the 
harness.  The blue wire serves as the antenna, which will transfer the signal from the RatPaak™ to the 
Receiver.  It should be tucked under the harness in a manner that will prevent damage to the wire from the 
subject.  It is important that the blue wire be kept straight so that it can transfer the signal.  The remaining 
wires should be connected to the subject to produce the two output Channels.  Each Channel has two 
inputs, a positive input and a negative input.  In Channel 1, orange is the positive input and orange with a 
white tracer is the negative input.  In Channel 2, violet is the positive input and violet with a white tracer is 
the negative input.  Brown should be connected to a ground.. 
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