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These sections provide important information concerning the proper operation of the unit. Additionally, in order to feel assured that you have gained a good grasp of every feature provided by your new unit, this manual should be read in its entirety. The manual should be saved and kept on hand as a convenient reference. As shipped, the TU-12BW’s batteries are not yet installed. Be sure to read the section “Changing the Batteries,“ and then follow the instructions to install the batteries. Copyri