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INSTRUCTION MANUAL 

INDOOR/OUTDOOR THERMOMETER WITH CLOCK 

MODEL #90817 

 
 

 

FEATURES 

 

0.5”H x 1.75”W digital LCD window with back light  

 

12/24 hour selectable clock 

 

Displays temperature in °F or °C  

 

Indoor temperature range of 4°F to 158°F (-15°C to 70°C) 

 

Outdoor temperature range of -58°F to 158°F (-50°C to 70°C) 

 

Temperature tol/- 2°F (+/- 11°C) 

 

Min./Max. temperature memory recall function  

 

Weatherproof sensor probe with 10ft. long cable 

 

Tabletop or wall-mountable 

 

Requires one AAA alkaline battery (Not Included) 

 
 

BATTERY INSTALLATION 

1.

 

The battery door is located in the back of the unit below the built in stand. To open, push down on 
the battery door and slide it in the direction of the arrow.   

2.

 

Insert 1 AAA alkaline battery according to the polarity markings located on the inside of the battery 
compartment. 

3.

 

Place the battery door back on and snap down into place.   

 
 

LCD READOUTS 

This unit displays three different readouts (Time, Indoor Temperature or Outdoor Temperature) which 
are activated by sliding the CLOCK-IN-OUT switch on the side of the unit. 
 
 

 
 
OPERATION 

 

Setting the Clock: 

Slide the CLOCK-IN-OUT switch to CLOCK to display the time.  The 12 or 24 hour selection switch 
and the buttons to set the clock are located in the back of the unit.  Select 12 or 24 hour mode by sliding 
the switch to either 12 HR or 24 HR.  Then press the HR button to set the hour and the MIN button to 
set the minutes. 
 

 
 

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