New Mosquito Repellent Light Smart Optically Controlled Killing Lamp Plug In Set Of Electronic Features: use the dual and electromagnetic chips work simultaneously to disorientate the hearing and nervous system of to quickly and powerfully drive them away. It can drive away most types of flying and crawling such as , , bed , cockroaches, mice, fleas, ants, , etc. The frequency is inaudible to humans and , it is -friendly, environmental-friendly, and safe for children. Chemical Free, the pest is 99% guaranteed safe for your family members and . It's widely used in , warehouses, offices, gardens, hotels, etc. Recommend you install one for each room because the ultrasound cannot penetrate walls and solid objects. As for large storage area with vermin, we suggest install 2 or more devices. Please make sure to install it vertically 120cm in away from the floor. And make sure there are no barriers like curtains or cabinets covering in front of the repellent. Most customers can see the results within 2-3 weeks Then we can say goodbye to Vermin Upgraded repellent working with low-frequency ultrasound waves, which means that it is gave you extremely silent and can't disturb you and your . Product Description: Material: ABS Power: 5W Voltage: AC90-220 (V) Electronic is a new type of high-tech electronic product that uses a high-frequency circuit with a sweep frequency to a sweep frequency wave of 20-55KHZ. Scientific research has found that , cockroaches, mice, , and other within this frequency range of sound waves will cause chaos in their endocrine system and physiological functions, thereby achieving the effect of driving away and killing. Ultrasound is to humans and other animals, Because sound waves exceeding 20KHZ cannot be heard by humans. Package Included: 1 pack Mosquito Repellent Light Due to its , , odorless, and high efficiency, it has been widely used. This product is widely used in households, warehouses, shops, hotels, hospitals, offices, computer rooms, gardens, hotel grain depots, etc Product effective range: around 80-120 square meters Installation and usage method: 1. Install the power socket on a wall 20-80 centimeters above the ground (almost all power sources left in home decoration are at this height), and keep it perpendicular to the ground (remember that the product cannot be placed flat on the ground). If there is no power supply at this height, an external patch panel needs to be connected to maintain the product at this height and perpendicular to the ground. 2. There should be no tall obstacles within 1 meter of the front of the product (i.e. they should not be installed on the back of objects such as refrigerators, wardrobes, sofas, etc.). 3. The orientation of the product should be in a relatively open indoor area, but doors and windows that have been open for a long time should not be chosen ( waves propagate in a straight line, which will cause them to diffuse outdoors, attenuate the indoor wave field intensity, and reduce rat drive efficiency) 4. Products should avoid facing fabric items such as curtains, fabric sofas, etc. as much as possible (fabric items have absorption) 5. The product should first be installed in the area with severe rodent infestation. the rodent infestation in that area is eliminated, the product should be installed in the relatively central position of the entire housing (such as the living room) or in the area where mice are most likely to enter 6. The product should work uninterrupted 24 hours during use. In addition, the doors and windows should be closed at night, as mice who open them during the day will steal away