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  • February 2005
  • February 2005

    Alarms

    Installing The Alarm Lock PG21 Series Self-Contained Door Alarm

    Feb. 15, 2005
    Installation and operation of the Alarm Lock PG21 series self-contatined door alarm.
    Locks

    Interchangeable/Removable Cores: How Do They Operate?

    Feb. 15, 2005
    Interchangeable/removable core lock mechanisms have been around since the early 1920s. Generally speaking, the identifying difference between the interchangeable core and the ...