1. Three modes: induction mode: infrared induction thermal object (straight line adjustable from 1 to 20 m) emits ultrasonic waves (fixed frequency), continuous mode: continuously emits ultrasonic waves without infrared induction, scanning mode: modeultrasonic induction from low frequency to high.frequency2. 24 hour mode: 24 hour working mode, day working mode, night working mode3. 4 types of alarm sounds: 1. The second sound is the siren sound, the third and fourth sounds are the eagle cry.(can be disabled)4. Ultrasonic frequency: 16KHZ-25KHZ (adjustable) Effective range: 5,000 square feet (about 400 square meters)5. Package contents: color box packaging, machine*1, screw bag*1, remote control*1, adapter*1