This product adopts the principle of infrared detection. When detecting animals, it emits ultrasonic waves and powerful LED flashes to scare animals away. It protects your yard, garden and more by helping keep you away from animals. This product simply drives away animals, does not contain any chemicals, and will not cause any harm to the human body. Product Description 1. There are 2 working buttons that can be adjusted: "Sensitivity" button (right): The sensitivity of the product can be adjusted, and the animal repellency is more targeted. Turn the knob clockwise and the detection range will increase. "Frequency" knob (left): Used to adjust the control frequency. Turn the knob clockwise and the frequency will increase 2. The "Frequency" button works as follows: 0: Disabled 1: 13KHZ-20KHZ can drive away mice, rats, minks and other animals 2:18KHZ-25KHZ can drive cats, dogs, foxes and other animals 3:23KHZ-35KHZ can drive deer, birds, monkeys and other animals 4: Powerful LED flash can hunt raccoon, boar, mink and other animals 5: All functions work at the same time, all band training animals and powerful LED flash 3. Effective range: at least 5-6 meters, up to 8-10 meters, with an angle of 120 degrees. Depending on the size of the animal, the bigger the animal, the greater the distance it can detect. 4. This product includes a 3.7V 1200MAH lithium battery and a USB cable. In case of long-term rainy weather, you can also use an additional DC adapter to charge the battery. Installation Notes 1. Place the product in an area that needs to be protected (eg garden, patio, etc.). 2. Please choose an appropriate orientation to ensure that the top solar panel can absorb the maximum amount of solar energy. 3. Carefully insert the ground rod of the product into the ground. It is recommended to dig a hole in the ground before inserting the product carefully to protect the product from damage. 4. The product can be inserted into the ground, hung on the wall or on a tree, or placed in other flat positions. About the battery 1. If the battery is not used for a long time, the battery power may be exhausted. It is recommended to fully charge the battery 3-5 times before you can use it normally. 2. After the battery has been used for a period of time, its service life will change, and it will soon be fully charged. Please replace the battery at this time.