SanJie Door and Window Alarms for Home Security - 2 Alarm Modes Instant/Delayed Alerts 30s/1min/2min/4min, 0-125dB Adjustable Volume for Kids Safety, Dementia Care, and Pool Safety - Alerts When Opene

["【Door Alarms When Opened】The door alarm sensor features both instant and delayed alert functions. It offers two ringtones: Siren Alarm & Chime: di di di.... It alerts you when the door is opened or door left ajar, for total peace of mind at home and work","【Instant & Delayed Modes】Mode 1 for instant alarm & chime. Modes 2-5 offer delayed alerts (30s, 1min, 2min, 4min).All Modes feature intermittent alerts,not continuous alerts(For example:sounds for 10s, pauses for 10s, then repeats).Alert mode until door is closed or any button on the alarm sensor is pressed","【Tool-Free Installation】The door sensor alarm uses 3M adhesive tape for secure attachment to doors, windows, or other objects. Indoor installation is recommended. Select alarm & chime sounds and one of Modes 1–5 to begin use.(Note: Installation distance between sensor and magnet strip: Non-metal doors <1.38 inches; Metal doors <0.98 inches)","【Battery & Volume】This window alarm sensors feature 5-level volume adjustment (0-125dB). Powered by two 1.5V AAA batteries with up to 1 year of battery life. Low battery is indicated by five beeps and a flash every 4 minutes. No worries about rapid battery drain or unexpected power loss","【Applicable Scope】This wireless door chime/alarm offers reliable 24/7 door open alarm to enhance home security and kids safety, aids in dementia care, and alerts you to ajar freezer or refrigerator doors to prevent food spoilage. Easily installed on front/sliding doors, windows, and cabinets, it is widely used in homes, apartments, offices, pools, stores, warehouses, and more.","【After-sales service】If you have any questions or issues while using the product, Can be contacted through the order channel, We will resolve them for you as soon as possible !"]