Thank you for viewing. Although I purchased the item and have never used the main unit, there is a memo on the upper left corner and damage to the box, as shown in the second photo. Also, the mounting sticker is creased. I hope you will understand this and consider purchasing. Window Pita Alarm High-precision security alarm that detects impact and opening. - Brand: ELPA - Model: ASA-W13-N2(PW) - Function: Impact/Opening Detection - Set Contents: Set of 2 - Color: White - Mounting Method: Adhesive