ACU-RITE 00621 - User Manual

Questions and Answers

D
dparkerJul 29, 2025
What to do if my ACU-RITE Weather Station has no outdoor sensor reception?
- G
  Geoffrey RoachJul 29, 2025
  If your ACU-RITE Weather Station isn't receiving the outdoor sensor signal, try these steps: * Relocate the display unit and/or the outdoor sensor, ensuring they are within 165 ft (50 m) of each other. * Keep both units at least 3 feet (.9 m) away from electronics like TVs, microwaves, and computers that could cause interference. * Use standard alkaline batteries (or lithium batteries in the sensor if the temperature is below -4ºF/-20ºC). Avoid heavy-duty or rechargeable batteries. * Allow up to 20 minutes for the display unit and sensor to synchronize after replacing the batteries.
M
Mrs. Maria Horn DVMAug 4, 2025
How to fix ACU-RITE 00621 Weather Station display screen not working?
- C
  Cody MooreAug 4, 2025
  If the display screen on your ACU-RITE Weather Station is not working, check that the batteries are installed correctly and replace them if necessary.
S
Steven HuberAug 10, 2025
What to do if the outdoor temperature on my ACU-RITE Weather Station is flashing or showing dashes?
- J
  jeffery01Aug 10, 2025
  If the outdoor temperature on your ACU-RITE Weather Station is flashing or showing dashes, it may be due to wireless interference. Try bringing both the sensor and display unit indoors and removing at least one battery from each. Then, reinstall the battery in the outdoor sensor, followed by the display unit. Let the units sit within a couple of feet of each other for about 20 minutes to establish a strong connection.
J
James DoughertyAug 16, 2025
How to correct an inaccurate temperature reading on my ACU-RITE 00621 Weather Station?
- M
  Monica GarciaAug 16, 2025
  To correct an inaccurate temperature reading on your ACU-RITE Weather Station, make sure both the display unit and the sensor are placed out of direct sunlight and away from any heat sources or vents.
N
Nicole ReyesAug 22, 2025
Why is the forecast on my ACU-RITE Weather Station inaccurate?
- D
  Denise FlynnAug 22, 2025
  The forecast icon on your ACU-RITE Weather Station predicts conditions for the next 12 to 24 hours, not current conditions. Ensure Learning Mode has completed for accurate forecasting. Allow the unit to run continuously for 33 days, as battery removal or resetting restarts Learning Mode. The forecast should be fairly accurate after 14 days, but Learning Mode calibrates for a total of 33 days.

Summary

Unpacking Weather Forecaster

Package Contents Checklist

Lists all items included in the weather forecaster package for user verification.

Weather Forecaster Features & Benefits

Outdoor Sensor Features

Details the key features and components of the outdoor sensor unit for optimal use.

Display Unit Features

Highlights the main features and functions of the central weather display unit.

Display Unit Back Panel Overview

Identifies buttons and ports on the back of the display unit for setup and operation.

Weather Forecaster Setup Guide

Installing & Replacing Batteries

Step-by-step instructions for powering the display and outdoor sensor units with batteries.

Battery Safety & Disposal

Essential safety precautions and environmentally responsible disposal methods for batteries.

Configuring Time, Date & Units

Optimal Placement for Accuracy

Display Unit Placement Advice

Recommendations for positioning the display unit for best viewing and performance.

Outdoor Sensor Placement Guide

Instructions for placing the outdoor sensor for accurate environmental readings.

Key Placement Guidelines

Essential tips to ensure accurate measurements and reliable wireless communication.

Operating the Weather Forecaster

Using the Learning Mode

How to utilize the Self-Calibrating Forecasting Learning Mode for accurate predictions.

Understanding Weather Forecasts

How the device generates personalized 12-24 hour weather forecasts based on sensor data.

Moon Phase Display

Information on how the device displays and tracks the current moon phase.

Barometric Pressure Monitoring

Details on monitoring current barometric pressure and its historical changes.

Viewing High & Low Records

How to view and clear recorded high and low temperature data for the day.

Troubleshooting Common Issues

No Outdoor Sensor Reception

Solutions for connectivity problems between the outdoor sensor and display unit.

Display Screen Not Working

Steps to resolve issues with a blank or non-responsive display screen.

Outdoor Temperature Display Errors

Troubleshooting steps for flashing or missing outdoor temperature readings.

Inaccurate Weather Forecasts

Tips to improve the accuracy and reliability of weather forecast predictions.

Inaccurate Temperature Readings

How to ensure accurate temperature readings by checking unit placement.

Care & Maintenance Guide

Display Unit Cleaning & Care

Proper methods for cleaning and maintaining the display unit to ensure longevity.

Outdoor Sensor Cleaning & Care

Guidelines for cleaning the outdoor sensor to maintain optimal performance.

Replacing Intelli-Time Battery

Step-by-step instructions for replacing the CR2032 battery for Intelli-Time.

Product Specifications & Compliance

Technical Specifications Overview

Key technical details including temperature ranges, wireless range, power, and data reporting.

FCC & Regulatory Compliance

Information regarding FCC compliance and regulatory standards for the device.

Customer Support & Warranty Info

Contacting Customer Support

Provides contact information and resources for customer assistance and product support.

Limited One Year Warranty Details

Explains the terms, conditions, and coverage period of the product's limited warranty.

Summary

Unpacking Weather Forecaster

Package Contents Checklist

Lists all items included in the weather forecaster package for user verification.

Weather Forecaster Features & Benefits

Outdoor Sensor Features

Details the key features and components of the outdoor sensor unit for optimal use.

Display Unit Features

Highlights the main features and functions of the central weather display unit.

Display Unit Back Panel Overview

Identifies buttons and ports on the back of the display unit for setup and operation.

Weather Forecaster Setup Guide

Installing & Replacing Batteries

Step-by-step instructions for powering the display and outdoor sensor units with batteries.

Battery Safety & Disposal

Essential safety precautions and environmentally responsible disposal methods for batteries.

Configuring Time, Date & Units

Optimal Placement for Accuracy

Display Unit Placement Advice

Recommendations for positioning the display unit for best viewing and performance.

Outdoor Sensor Placement Guide

Instructions for placing the outdoor sensor for accurate environmental readings.

Key Placement Guidelines

Essential tips to ensure accurate measurements and reliable wireless communication.

Operating the Weather Forecaster

Using the Learning Mode

How to utilize the Self-Calibrating Forecasting Learning Mode for accurate predictions.

Understanding Weather Forecasts

How the device generates personalized 12-24 hour weather forecasts based on sensor data.

Moon Phase Display

Information on how the device displays and tracks the current moon phase.

Barometric Pressure Monitoring

Details on monitoring current barometric pressure and its historical changes.

Viewing High & Low Records

How to view and clear recorded high and low temperature data for the day.

Troubleshooting Common Issues

No Outdoor Sensor Reception

Solutions for connectivity problems between the outdoor sensor and display unit.

Display Screen Not Working

Steps to resolve issues with a blank or non-responsive display screen.

Outdoor Temperature Display Errors

Troubleshooting steps for flashing or missing outdoor temperature readings.

Inaccurate Weather Forecasts

Tips to improve the accuracy and reliability of weather forecast predictions.

Inaccurate Temperature Readings

How to ensure accurate temperature readings by checking unit placement.

Care & Maintenance Guide

Display Unit Cleaning & Care

Proper methods for cleaning and maintaining the display unit to ensure longevity.

Outdoor Sensor Cleaning & Care

Guidelines for cleaning the outdoor sensor to maintain optimal performance.

Replacing Intelli-Time Battery

Step-by-step instructions for replacing the CR2032 battery for Intelli-Time.

Product Specifications & Compliance

Technical Specifications Overview

Key technical details including temperature ranges, wireless range, power, and data reporting.

FCC & Regulatory Compliance

Information regarding FCC compliance and regulatory standards for the device.

Customer Support & Warranty Info

Contacting Customer Support

Provides contact information and resources for customer assistance and product support.

Limited One Year Warranty Details

Explains the terms, conditions, and coverage period of the product's limited warranty.

The AcuRite Weather Forecaster, model 00621, is a comprehensive weather monitoring system designed to provide personalized weather forecasts and current environmental conditions for your home. This product consists of two main components: a display unit and an outdoor sensor, working together to deliver accurate and timely weather information.

Function Description:

The primary function of the AcuRite Weather Forecaster is to provide a 12 to 24-hour weather forecast, tailored specifically to your location. This is achieved through AcuRite's patented Self-Calibrating Forecasting technology, which analyzes changes in barometric pressure over time to determine your altitude and predict local weather conditions with pinpoint accuracy. The system also displays current outdoor and indoor temperatures, moon phases, and a pressure history graph to track barometric pressure changes. An Intelli-Time® clock automatically sets itself to the correct time and date, including adjustments for Daylight Saving Time, once you select your time zone. The display unit also tracks and displays today's high and low records for both indoor and outdoor temperatures, which automatically clear at midnight.

Usage Features:

12 to 24 Hour Weather Forecast: The display unit features a prominent icon that visually represents the predicted weather conditions for the next 12 to 24 hours. During the initial 14-day "Learning Mode," the system self-calibrates to your specific location, after which the "Learning Mode" icon disappears, and the forecast becomes highly accurate.
Outdoor and Indoor Temperature Display: The display unit shows the current outdoor temperature, transmitted wirelessly from the outdoor sensor, and the current indoor temperature, measured by the display unit itself.
Moon Phase Display: A series of simple lunar phase icons on the display unit allows you to track the current phase of the moon, from New Moon to Waning Crescent.
Pressure History Graph: A graphical representation on the display tracks the barometric pressure history, enabling you to monitor changes in pressure over time, which is crucial for understanding weather patterns. The current barometric pressure is also displayed in your preferred unit (inHg or hPa).
Intelli-Time® Clock: This advanced feature ensures that the clock and calendar are always accurate. After selecting your time zone and Daylight Saving Time preferences, the clock automatically sets itself and adjusts for DST changes. The display shows the current time and date.
High & Low Records: The display unit records and shows the highest and lowest indoor and outdoor temperatures for the current day. These records are automatically reset at 12:00 AM daily. You can manually clear these records by pressing and holding the respective "▲" or "▼" buttons.
Wireless Signal Indicator: The display unit includes an indicator that shows the strength of the wireless signal from the outdoor sensor, helping you ensure optimal placement.
Low Battery Indicators: Separate low battery indicators for both the sensor and the display unit alert you when it's time to replace the batteries, ensuring continuous operation.
User-Friendly Setup: The setup process involves installing batteries in both units and then configuring basic preferences on the display unit, such as time zone, DST, and temperature/pressure scales, using the "SET," "▲," and "▼" buttons. The system automatically exits setup mode after 30 seconds of inactivity.
Flexible Placement: The outdoor sensor features an integrated hanger for easy placement in a suitable outdoor location, ideally 4 to 8 feet above the ground in permanent shade. The display unit has a fold-out tabletop stand for desktop use and an integrated hang hole for wall mounting.
Wireless Communication: The outdoor sensor wirelessly transmits data to the display unit, with a range of up to 165 feet (50 meters), depending on construction materials and environmental interference.

Maintenance Features:

Battery Replacement: Both the display unit and the outdoor sensor require batteries for operation. The outdoor sensor uses 2 AA batteries (lithium batteries are recommended for temperatures below -4°F / -20°C), while the display unit uses 2 AA alkaline batteries. The manual provides clear instructions on how to access the battery compartments and replace the batteries, emphasizing correct polarity.
Intelli-Time® Battery: The Intelli-Time® clock is powered by a pre-installed CR2032 coin-cell battery, which stores time and date settings. Instructions are provided for replacing this battery when necessary, ensuring the clock's continued accuracy.
Cleaning: Both the display unit and the outdoor sensor should be cleaned with a soft, damp cloth. It is important to avoid using caustic cleaners or abrasives. For the display unit, regularly clean the ventilation ports with a gentle puff of air to prevent dust and dirt buildup.
Environmental Protection: While the outdoor sensor is water-resistant and designed for general outdoor use, placing it in an area protected from direct weather elements (like under an eave or a well-covered tree branch) will help extend its lifespan.
Troubleshooting Guide: The manual includes a comprehensive troubleshooting section to help users resolve common issues such as no outdoor sensor reception, a non-working display screen, flashing outdoor temperature, or inaccurate forecasts. This guide provides step-by-step solutions, including relocating units, checking batteries, and addressing wireless interference.
Product Registration: Users are encouraged to register their product online to receive a 1-year warranty protection, ensuring support and service if needed.
Customer Support: AcuRite offers dedicated customer support via phone and their website, providing resources such as installation videos, instruction manuals, a support user forum, and replacement parts, ensuring users have access to assistance whenever required.

ACU-RITE 00621 Specifications

General

Brand	ACU-RITE
Model	00621
Category	Weather Station
Display Type	LCD
Humidity Range	1% to 99%
Indoor/Outdoor Temperature Range	32°F to 122°F
Wireless Transmission Range	330 ft (100 m)
Features	Wireless