La Crosse Technology WS-9055TWC Instruction Manual page 20

Batteries—(Alkaline recommended)
Remote 2 x AA, 1.5V
Temperature
Sensor
Indoor Weather 2 x AA, 1.5V
Station
Dimensions: (L x W x H)
Indoor Weather 5.5" x 3.2" x 1.25"
Station
(140 x 81 x 32 mm)
Remote 1.57 x 0.85 x 5.00 in.
Temperature
(128 x 40 x 23 mm)
Sensor
Battery life Approximately 1 year
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