【Multiple Use】 Adjustable ultrasonic frequency can repel different animals, such as birds, dogs, mice, squirrels, etc. 【Motion Sensor】 With the PIR motion sensor, it will activate the to emit ultrasonic frequency when it detects motion in a certain range. 【Ultrasonic Sound】 It is an ultrasonic technology adopted by pest repeller which is humane, eco-friendly, pollution-free and high efficiency. 【Solar Power】Powered by solar panel, no messy power cord, low power consumption and environmentally friendly. 【Practical Designs】 Weatherproof, designed for outdoor use, effectively protects your crops or gardens against destruction., Manufacturer: Haofy