Thank you for viewing! Price reduced!! Product Name: ELPA Slim Thin Alarm ASA-W13(PW). Contents: 2 brand new, unopened units!! Attaches to windows and sounds a loud alarm upon detecting impact or opening. Detects glass breakage, impact, and window opening. High-precision impact detection minimizes false alarms. Slim design allows for use on most windows without obstructing opening and closing. Easy-to-use slide switch for arming and disarming. Battery-powered and easily installed with double-sided tape. Can be installed on patterned glass. Emits a loud alarm of approximately 90dB. 【Features and Benefits】 This alarm minimizes false alarms and provides early warning of intrusion if a window is broken. It is ideal for home and office security. 【Installation and Usage】 Easy to install, no special tools required. Simply attach to the window and start using. - Brand: ELPA - Product Name: Slim Alarm - Quantity: 2 - Function: Detects impact and opening of window glass - Operation Method: Strong sensing activation - Usage: Attach to windows - Alarm Sound: Loud alarm - Model Number: ASA-W13(PW) - Manufacturer: ELPA