The MT 5500 includes 20 standard programs, which are maintained in an electrically erasable non-volatile memory, for the ultimate in security application versatility. The unit maintains all settings even when disconnected from power and does not require recalibration when unit is turned OFF and back ON. No battery is required for memory retention. When the unit is in operation, a self-test of all systems is performed continuously with any failures or problems reported on the LCD display.
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