Product description1[Infrared principle]: Animal repeller uses infrared detection principle, to send out ultrasonic probe at the same time to drive away small animalsSolar animal repeller can help you stay away from pesky stray dogs, cats and other small animals harassment to protect your property and your gardenwoodpecker deterrent2[Portable design]: Since the animal repeller is a portable design, can be installed in your home, garden, courtyard or anywhere, this product is low voltage power supply with battery, this product can drive animals without warranty of any chemicals, it is only issued to 25kHz ultrasonic frequency drove them awaythere will not be any harm to the human body3[ Motion Activated]: Sensor sensitively detects moving objects while triggering 120 dB alarm sounds, ultrasound and flash to prevent intrusion of bad guys and dangerous animals, protecting your personal and property safety4[Movement detector]: This is a non-stop transmission infrared sensor output signal when the sensor detect animals get into the detection range, it will automatically send out acoustic frequency to drive animals and the LED lights up followed5[Portable & Easy use]: You can simply push the animal repeller into the groundPerfect for yard, patio, driveways, garage, attics, porches, boats, gardens, farms, ponds, etcEven it is portable to take into your camping to be away from stray dogs, stray cats and pests harassment