about this project Effective Animal Deterrent: Powerful ultrasonic waves repel unwanted wildlife and protect your outdoor garden from disturbance. The strong ultrasonic signal scares cats, dogs, birds, foxes, squirrels and various other animals away from your home garden and yard. It does not contain chemical ingredients that threaten human health, and is environmentally friendly and safe. Easy to install: it can be mounted on the ground with the provided spikes, or it can be screwed to the wall or fence. Really easy to set up and use. Place it on your farm, garden, yard, lawn, patio, garage, cabin, shed or anywhere you need 24-hour safe and effective pest control. Wide Coverage and Adjustable Sensitivity: The infrared PIR motion sensor has an angle up to 110 degrees and a detection range up to 8 meters. The large detection area can reach 230 square meters. Get rid of animal waste, food damage, noise and footprints in just days. You can adjust the sensitivity of the PIR sensor according to your garden. BATTERY OPERATED AND WATERPROOF: The scarer is powered by 3 AA batteries (not supplied). This is designed for cloudy weather. It works every day with or without sunlight. It is also waterproof and can work in all weather conditions like rain, snow, ice and wind. Specification: Infrared sensing angle: 110 degrees Detection range: 8 meters, depending on the size of the animal (the larger the size, the greater the range) Power: 3 AA batteries (not supplied) Red LED: Indicates that the device is activated maintain: Do not cover the PIR sensor. Please install the device in the direction where the animals come to get better results. It so happens that humans can hear part of its range. So try to keep the device away from people's lives. Do not install the device in children's and infants' playground areas. To clean the device, use damp, mild soapy water. Do not use harsh chemicals or abrasive cleaners that may damage the device.