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Features · 3 selectable modes: 1) The Uninterrupted, 2) BGM/PG mode and 3) OFF/PG mode 1) Uninterrupted mode: BGM or PG (paging) or OFF (silent) 2) Two-state mode: BGM (background music) or PG (paging) 3) OFF&PG mode: OFF (silent) or PG (paging) · Supports 3-wire or 4-wire emergency override systems · Independent 3-wire or 4-wire volume control override for each channel · Expandable up to 180 zones uninterrupted or cascade up to 30 units · All Call top priority emergency override trigger terminal ready · Emergency override triggering through digital port or hardwire port · Selectable positive edge trigger or negative edge trigger on analog port · Twin RJ-45 digital communication ports for easy linking · Microchip controller makes complicated system simple · Software ID address setting to eliminate complicate dip switches setup
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