While other bat repellents may not be pet friendly, have unpleasant odors, or limited effectiveness, Pest Destruct Ultra Bat Repellent operates silently, is odorless, and is safe for use around children and pets. How it works – This ultra device emits sound waves that are designed to deter bats and other unwanted pests by creating an environment that encourages them to leave. It requires no chemicals, leaves no mess, and helps maintain a cleaner home without the presence of deceased animals. Each unit is effective for areas up to 800 square feet when placed in open spaces without obstructions. Enjoy a more comfortable living environment – although primarily designed for bats, this repellent may also help deter mice, rats, flies, insects, mosquitoes, fleas, and cockroaches. We are committed to quality and safety, using our products in our own homes to ensure performance and reliability for your family. Product Specifications 1. Voltage: 100-240V AC, 50/60HZ 2. Power: 2.5w 3. Output o: 20-65KHz For indoor electrical plug-in use only. Avoid installation in outdoor, wet, humid, or high-temperature environments. Effective coverage: 100 to 800 square feet with clear line of sight in front of the unit.