Wsdcam 4-in-1 Door and Window Alarm

Wsdcam Door and Window Alarm Kit will be triggered immediately once you separated two parts (alarm sensor and magnetic part). The alarm come with 4 in 1 function -- General Alarm, Constant Alarm, Closing-door Alert, and Doorbell. 110 db loud alarm helps deter intruder and possibly notifies neighbors/homeowner, also helps notify you if visitors/children/pet or others are coming/going when you are at home. Perfect for Home, Office, Dorm room...Easy peel and stick installation, suitable for different door & window typesEasy Installation:Clean the mounting surface.The double-sided adhesive tape on the bottom and then alarm is attached to the clean positionDouble-sided stickers magnets sensor next door or door frame. Note:1. Ensure close the alarm and magnetic sensor, the installation distance should not exceed 0.39inch.2. The 2 parts need be aligned by their alignment arrow.Doorbell ModeWhen you set doorbell mode, it sounds "dingdong" instead of siren sound when door opens.Set the mo