First, the application of this product : 1 , can not use bait , insecticides, flour mills , food processing plants , rice mill , pharmaceutical plants, feed mills , silos , etc. ; 2 , plagued by rodent and pest contamination theaters , restaurants , supermarkets, department stores , hotels, hospitals , etc. ; 3 , often encountered rats, eaten by worms and grocery stores , clothing stores , food stores , furniture stores , etc. ; 5 , villas , homes , air conditioning room , institutions, canteens and storage rooms . Second, note : 1, the machine should be installed in the ground 20 to 80 cm, perpendicular to the ground requirements into an electrical outlet ; 2 , the mount point should try to avoid carpets, curtains and other sound-absorbing material to prevent the reduction in sound pressure sound field becomes smaller impact repellent effect ; 3 , use within a few days ago , if found rodents, insects and other activities increased significantly, is a normal phenomenon . Because usually hiding in the nest rat , insects by ultrasound and electromagnetic attack, have fled their original hiding place ; 4, the machine straight into AC power socket (using voltage range : AC90V ~ 250V, frequency : 50Hz ~ 60Hz); 5, Caution: moisture proof , waterproof ; 6 , do not use strong solvents , water or damp cloth to clean than the body, use a dry soft cloth dampened with neutral detergent to clean the body ; 7 , do not drop the unit or subject it to strong impact ; 8 , the use of ambient temperature: 0 to 40 degrees Celsius ; 9 , if placed in the warehouse or goods piled place or room floor shall be more than put a few of this machine, in order to increase the effect . Third, the main technical parameters: 1, Model: 1012 , Voltage : AC 180V-250V / 50HZ, AC 90-110V/60HZ; 3, Power : 8W 4, Output frequency : 20kHz - 55kHz 5, effective