360° coverage: 360° ultrasound is released to drive away rodents and pests. The shape and options are suitable for almost any nook or cranny in your home that has exits. Complete protection against rodents in your home. 4 adjustable modes: L1: 9 - 235 kHz variable frequency attack ultrasonic damage mouse auditory system; L2: 25 - 65khz variable frequency ultrasound emission waves - disturb the olfactory system of the mouse; L3: alarm sound and Explosive Flash (cyclic operation of 5 / 15 / 35 / 60 minutes) - rapid hunting of mice; L4: 965khz Ultrasound, Simultaneous Voice Alarm and Flash Wide Coverage: Effectively drives out mice, squirrels, cockroaches, spiders and many other rodents and pests. Ultrasonic repellents are effective in an indoor area of 600 square meters. Feet, so don't worry your room is too big to cover. It is widely used in home, warehouse, office, garden, hotel, etc. Constant use: Continue to use for 1 - 2 weeks. Early cavities can become abnormally active, but later