Detector Wireless Alarm Door Sensor Window Security Alarm Door Annunciator Door Opening Sensor

Label:Yes Size: AS The Picture 4 in 1 Multi-Function --- General Alarm, Constant Alarm, Closing-door Alert (Time Delay), Doorbell. Battered by 2pcs AAA batteries (not included). Package Included: 1pcs Door/window Alarm. Materials: ABS Item Type: Wireless sensor Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.