[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 the beasts around the house comprehensively. [POWERFUL FUNCTION]: Ultrasonic insect repellent can provide 24-hour protection for your yard or farm three working modes infrared induction mode: it can detect thermal objects in a straight line at a distance of 1-20m. Continuous mode: without infrared induction it can emit ultrasonic waves continuously. Scan Mode: Gradually emit ultrasonic waves from low frequency to high frequency.[TWO POWER SUPPLY 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 day and night your garden lawn cabin shed attic farm barn warehouse yard or any other place where pests need to be controlled effectively and safely. [EASY TO USE]: This is a harmless repellent with multiple installation options. Whether on your wall or fence or simply by inserting 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 16.8 cm, width 8.3 cm ,height 13.6 cm Packing list: Device * 1 Screw package * 1 Adapter * 1