Time Delay Wireless Alarm Door Sensor Window Security Alarm Door Annunciator Door Opening Sensor

Label:Yes Item Type: Wireless sensor Size: AS The Picture Battered by 2pcs AAA batteries (not included). Materials: ABS 4 in 1 Multi-Function --- General Alarm, Constant Alarm, Closing-door Alert (Time Delay), Doorbell. Package Included: 1pcs Door/window Alarm.

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.