Eliminate Battery Changes: Replaces the need for AA batteries in your AcuRite Iris, AcuRite Atlas, or AcuRite Optimus weather sensors (sold separately) Enhanced Self-Safety: After initial installation, you’ll no longer have to replace batteries in hard-to-reach places Utilize Solar Power: Eliminate the need of disposable batteries Cost Savings: Save money with this high return-on-investment solar power pack Functionality: Built-in 30-foot cord for convenient installation options and optimal solar panel placement Compatibility: Works with the AcuRite Iris (5-in-1), AcuRite Atlas (7-in-1) and AcuRite Optimus (6-in-1)