La Crosse Technology WT-2150A - Manual (Page 7)

Battery Change
• It is recommended to replace the battery on an annual basis to ensure
optimum accuracy or when the battery icon indicates low running power.
• When replacing the battery, be sure to leave battery out for at least one
minute to allow complete reset.
• Place battery firmly in compartment to ensure proper contact.
Specifications:
Time Source/Frequency
: WWVB/60 kHz
Temperature measuring range : -21.8°F to +155.9°F
(-29.9°C to +68.8°C)
Temperature resolution : 0.2°F (0.1°C)
Temperature checking interval : Every 10 seconds
Power source : 1 x AA, IEC LR6, 1.5V Alkaline
Battery life cycle : Approximately 12 months
Dimensions (L x W x H) : 3.70 x 3.50 x 1.91 in
(95 x 90 x 49 mm)