User's Manual
STRATEGIC Technologies Inc LOCK Basics
iTRX Series Users Guide (STI) Feb 6, 2004 11
LOCK Basics
The LOCK is a device that is carried by the person who installs equipment on participants. The LOCK
has two functions that are required during installation. The first function which is activated when you
push the iRX button, allows access to Function Mode / Extended Function Mode on the ACU (See
Page 24 for more information on Function Mode and Page for more information on Extended Function
Mode). The second function which is activated when you push the iTX button will reset the strap
circuitry on an iTX (See Pages 10, 11, 15, 16 for more information on resetting the iTX).
Replacing the Battery
The LOCK uses a standard 9V alkaline battery (non-rechargeable). To replace the battery push the
two round “buttons” on each side of the LOCK at the same time. This will cause the bottom cover cap
to be released. You can then simply replace the battery that is currently in the LOCK.
Low Battery Indicator
The LOCK will indicate if the battery is low by flashing green / red when any button is pushed. The
LOCK may continue to operate for several installations after the light starts flashing.
Figure 4 : LOCK