Because of its safe, non-toxic, tasteless, efficient so it has been widely used. This product is widely used in homes, warehouses, shops, hotels, hospitals, offices, rooms, gardens, hotels, etc. Product effective range: 80-120 square meters, the best effect is 50 square meters, and each room to install one. Power supply voltage: AC220V-AC110V Power consumption: less than 5W Installation: 1, installed in the ground from the ground 20 - 80 cm wall of the power outlet (home decoration left almost all of this power), and the ground to keep vertical (remember that the product can not be flat on the ground). If there is no such power supply, an external plug-in board is required to keep the product at this level and stay perpendicular to the ground. 2, in the product within 1 meter shall not have a large obstacle (that is not installed in the refrigerator, wardrobe, sofa and other objects on the back). 3, the product orientation should be more spacious indoor places, but not long-term open doors and windows (ultrasound is a straight line, so that it will spread outdoors, the attenuation of indoor wave field strength, reduce the efficiency of the drive) 4, the product should be as much as possible 5, the product should first be installed in the most serious areas of rodents, when the region after the eradication of rodents, and then install the product in the whole set of products, such as curtains, fabric sofa and other cloth items (cloth items on the ultrasonic absorption) Housing relative to the central location (such as the living room) or the mouse most likely to come in place 6, the product should be used 24 hours without interruption. In addition, the evening should be closed doors and windows, open the day during the day when the mouse will be stolen out of the window)