Hand-Off-Auto (HOA) stations are commonly used on control panels today in a variety of industries to allow. operators and maintenance personnel to override the control actions of the primary control system during abnormal. conditions or to allow equipment maintenance.
TIP sheetSKIMMING & SCANNING. Skimming and scanning are reading techniques that use rapid eye movement and keywords to move quickly through text for slightly different purposes. Skimming is reading rapidly in order to get a general overview of the material. Scanning is reading rapidly in order to find specific facts. While skimming tells you what general information is within a section, scanning helps you locate a particular fact.
Our Scan Series is ideal for reading motion detectors, glass breakage detectors, window/door open detectors, light switches, and other kinds of devices with a contact closure output. This Board is capable of controlling up to 256 Relays through the XR Expansion Port.