What is the difference in reading? The accuracy rating is +/-2° and 5% per unit. If the two units are sitting side by side you can show up to a 4°/10% difference. Please verify you are using the battery recommendations below. Thank you.
•Verify you are using fresh alkaline batteries or lithium batteries (when temperature is below -4°F/-20°C) in sensor.
•Quality brand batteries are recommended, including Duracell, Rayovac, Energizer, or Kirkland.
•Verify batteries are fresh. The battery expiration date should be at least 6 years out. Batteries can lose 3% power or more every year in storage.
•Heavy duty, extra strength or generic / store brand batteries are not recommended for use with AcuRite products because they may cause performance irregularities due to the way these types of batteries disperse power. Each battery should not exceed 1.6 volts.
•Rechargeable batteries are not recommended for use with AcuRite products because they may cause performance irregularities due to the voltage instability of these types of batteries.
•Mixing different battery types (brands, old/new, etc.) is not recommended.