| LED RED LIGHT FLASHES WITH 4 MODES OF OPERATION: STANDBY ALARM MODE HUSH(R) MODE amp; MEMORY SET TEST/RESET BUTTON TESTS UNIT S ELECTRONIC CIRCUITRY HORN amp; BATTERY FUNCTION amp; RESETS ITS MEMORY AFTER AN ALARMING CONDITION OCCURS HUSH(R) MODE TEMPORARILY SILENCES NUISANCE ALARMS BATTERY OPERATED NO WIRING NEEDED SEALED-IN LI-ION BATTERIESUNIT WILL CONTINUE TO OPERATE FOR 10 YEARS |

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