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La Crosse Technology WS2813UIT Weather Radio User Manual

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Page|21

24HOURRAINFALLALARM

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1. The24‐hourrainfallalarmdisplaywillbeshown.

2. PressandholdtheSETkeyforabout2seconds.The24‐hourrainfalldigitwillflash.

3. Pressthe▲UPARROWkeyor▼DOWNARROWkeytosetthe24‐hourrainfallalarm

value.

4. Pressthe

ALARMkeytoconfirmthesetting.Thedigitwillstopflashing.

5. PresstheSETkeytoswitchonoroffthealarm.The((()))iconindicatesthealarmis

switchedon.

6. PresstheALARMkeytoexitthealarmsettingmode.

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HYSTERESIS

Tocompensateforfluctuationoftheweatherdata,whichmaycausetheweatheralarmtoring

constantlyifthemeasuredreadingisclosetothealarmlevel,a

hysteresisfunctionhasbeenimplementedforeachweather

alarm.

Forexample,ifthehightemperaturealarmissetto77°Fand

thetemperaturereaches77°F,thealarmwillbeactivated.Ifthe

temperaturethendropsto76.8°F(achangeoflessthan1.8°F)

andthenincreasesto77°Fagain,thedatawillblink,butno

alarmwillbeactivated.

Thetemperaturewouldhavetodropbelow75.2°F(withapre‐

sethysteresisof1.8°F)sothatthealarmcanbeproducedagain.

Hysteresisvaluesforthevariousweatherdatatypesaregivenin

thetable.

Note:Thetemperatureorhumiditydatawillkeepflashingevenafteraweatheralarmhas

beenswitchedoffbyakeypress.Theflashingvalueindicatesthatthecurrentweather

conditionisoutofthepre‐setweatheralarmlimit(s).

WEATHERFORECASTANDWEATHERTENDENCY

WEATHERFORECASTINGICONS:

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 

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Sunny Cloudywithsunnyintervals Rainy

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Foreverysuddenorsignificantchangeintheairpressure,theweathericonswillupdate

accordinglytorepresentthechangeinweather.



Weatherdata Hysteresis

Temperature 1.8°F

Humidity 3%RH

Pressure 0.029inHg

Windspeed 6.2mph

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