Sell [LOVOSKI2] Door Knob handle Hanging Alarm Door Detector Sensor Alarm for Home Security best price

Description : Just the alarm in door handle / knob , when there is someone opens the door or touches the door handle from either side , the alarm will generate loud alarm sound to inform there is a intruder . Work as an anti - theft alarm , alarm siren up to 120dB . Easy to use and installation , no wiring needed ( requires DC 6F22 9V batteries , not included ); just simply the alarm on the inside of your door handle . Perfect travel alarm and great for home , hotel , dorm , etc . The sensitivity may be affected by the composition of the door handle . Specification : Material : Plastic Size : Approx . 10x5 . 5x2 . 5cm / 3 . 94x2 . 17x0 . 98 inches Power : DC 6F22 9V Package Includes : 1 Piece Door Handle Alarm Note : Since the size above is measured by hand , the size of the actual item could be slightly different from the size above . Due to the lighting effects , monitor settings , etc . There could be some slight difference in the color tone of the pictures and the actual item .