[EFFECTIVE RANGE]: The ultrasonic frequency of this bird repeller is adjustable from 16KHZ-25KHZ, and the effective range is 5000 square feet (about 400 square meters), which can disperse pests and beasts around the house globally. [POWERFUL FUNCTION]: Ultrasonic insect repellent can provide round-the-clock protection for your yard or farm, three working modes, infrared induction mode: it can detect thermal objects in a straight line at a distance from 1 to 20m. Continuous mode: without infrared induction, it can emit ultrasonic waves continuously. Scanning mode: the progressive emission of ultrasonic waves from low frequency to high frequency. [TWO POWER MODES]: The animal disperser is powered by two 4C batteries or AC power. The detachable base can protect the machine from moisture and damage. (Battery not included) [REAL-TIME PROTECTION]: The unique seal and design allow you to place it anywhere. Protect your garden, lawn, cabin, shed, attic, farm, barn, warehouse, yard day and night or any other location where pests need to be controlled safely and effectively. [EASY TO USE]: This is a harmless repellent with multiple installation options. Whether on your wall or fence, or simply by inserting it into the ground, you can exclude rodents, seagulls, insects, rats, mice, birds, bears, deer and dogs. Our powerful ultrasonic insect repellent for animals will provide safe and effective protection in any weather feature: 1. The maximum coverage area is 5,000 square feet. 2. Easy to install, it can provide excellent pest protection almost anywhere. Three modes: 1. Induction method: Infrared induction heat generates ultrasonic waves (fixed frequency) 2. Continuous mode: no infrared induction, continuous ultrasound 3. Scanning method: low-frequency high-frequency ultrasonic induction method Product Name: Outdoor Animal Repellent Product material: ABS Power: 3.6W Rated frequency: 15-20k (HZ) Rated voltage: 110V-240V Product size: length 16.8cm, width 8.3cm, height 13.6cm Weight: 0.6kg Packing list: Device * 1 Package of screws * 1 Adapter*1