The AcuRite 75077 Wireless Weather Station displays indoor and outdoor temperature with highs and lows, weather forecast, atomic time, date and day of the week. The weather forecaster uses AcuRite's patent pending 14 day learning mode. When the AcuRite 75077 is activated, the forecaster will analyze atmospheric pressure variations for 14 days to profile it's location. Once the 14 days have passed, the AcuRite can use barometric pressure and temperature data to display a weather forecast icon with superior accuracy. The weather forecast icon will display the likely weather forecast for the next 12 to 24 hours.

Features at a glance:

• Self calibrating weather forecaster
• Indoor/Outdoor Temperature
• Daily High Low Temperature
• Self setting, high accuracy Atomix atomic clock
• Displays day and date
• Large, Easy to Read Display
• Powerful Wall Penetrating Signal

Prominently displayed in the upper left is a weather forecast icon. This self calibrating weather forecaster analyzes it's environment in order to give you a forecast with superior accuracy. Based on barometric pressure changes and outdoor temperature, the forecaster displays a weather prediction for the next 12 to 24 hours.

To the right of the weather forecast icon is the outdoor temperature data. Outdoor temperature is displayed in large 1 1/4 inch digits, along with daily high and low temperature in 3/8 inch digits. You may choose temperature in °F or °C. Also displayed is a signal strength display, indicating the strength of the signal received from the remote wireless temperature sensor. Below the outdoor temperature data is the day and date display.

At the lower left of the display is the time display. The AcuRite 75077 has Atomix clock functionality. The 75077 can receive WWVB radio broadcasts carrying timing information from the US atomic clock source in Colorado. As long as the WWVB signal reaches the 75077, the time display will be accurate to a fraction of a second, and DST changes will be automatic (DST changes may be optionally disabled). Time is displayed in 12 hour mode in 3/4 inch digits, along with a WWVB signal strength indication.

Indoor temperature data is displayed in nearly 1 inch digits the lower right, along with indoor daily high and low temperatures. 

Specifications:

• Indoor temperature measuring range:
  +32°F to +122°F (0°C to +50°C)
• Outdoor temperature measuring range:
  -40°F to +158°F (-40°C to +70°C) 
• Resolution: 
  1°F/C
• Remote sensor transmission range: 100 feet (33 meters) maximum in open space with no interference
• Clock display:
  12 hour
• DST:
  Automatic (may be disabled)
• Time zones:
  Eastern, Central, Mountain, Pacific
• Main unit power requirements: three AA (1.5V) alkaline batteries
• Remote temperature sensor power requirements: two AA (1.5V) alkaline or Lithium batteries
• Main unit dimensions:
  Width: 7 3/4 inches
  Height: 6 1/4 inches 
  Depth: 1 inch (without stand)

Note: The AcuRite 75077 has "atomic" clock functionality. Atomic, or radio controlled, clocks receive a radio signal to set themselves. Like any radio receiver, however, they may not be able to receive the signal if they are in a building with a lot of steel in the structure, near computers or other electrical equipment that may generate interference, or if the weather is unsuitable. The signal they receive does not propagate well during the day. That's the nature of the signal, not the clock. These clocks are designed to catch the signal when they can, generally in the middle of the night, calibrate themselves, and then run quite accurately for days until they can catch another signal. When you first put in the batteries, they will most likely not set themselves until the middle of the night. That's normal. By morning, weather permitting, it should be correct. Under less than ideal conditions, it could take a few days. Also, Daylight Saving Time changes may not be made the first night if location and weather are not favorable.