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Battery supplied with a typical 5 year • operating life. Crytal Reference: .0001% —40°C • Polaroid filter. 50° C • • Not FAA - PMA Approved Warranty: 1 year 427 HILLCREST WAY REDWOOD CITY. CA 94062 (650) 369-1188 • WWW.DAVTRON.COM 427 HILLCREST WAY...
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M O D E L 8 1 1 C O P E R AT I O N Davtron model 811C has an internal lithium battery before it leaves the factory. All three functions of the clock are activated and working. At this time, Davtron sets the clock function to accurate time of GMT.