Overview: This repeller should be installed at 20~80cm away from the floor, & should be vertical to the floor & plug to the power socket The installing point should be avoided from carpet, curtain etc attaching sound material, or else decrease of the sound pressure will do harm on the pest effect It is normal that the mouse & pests will increase at the beginning of the using days because they will get away from their living place after the attack of the ultrasonic This repeller can be plug directly at AC power socket. (Power range: 90V-250V/50 Hz-60 Hz) Caution: moisture proof, waterproof Don't clean the repeller by strong impregnant, water or damp cloth. Use dry & soft cloth with some nevter wash to clean the repeller Don't drop the repeller & make strong striking on it Using environment temperature: 0~40 Celsius degree To increase the effect, you should use several sets of repeller at the warehouse or good pile-up, several