NineLeaf Freezer Door Alarm,Door and Window Alarms for Home Security,3/15/30/60S 4-In-1 Door Magnetic Refrigerator Door Open Alarm Delayed Door Closing Bell for Home Business Office Shop,200PK

<b>NineLeaf Freezer Door Alarm with Delay When Left Open，Door Window Alarm When Opened (3/15/30/60 Seconds)</b><br><br> • General Alarm: Triggers when a door or window is opened.<br> • Constant Alarm: Continues for at least 10 seconds, even after the door or window is closed.<br> • Closing Reminder: Alerts you to close a door or window if it’s left open.<br> • Doorbell Mode: Plays a clear “ding-dong” sound when the door opens.<br><br> <b>Technical Specifications:</b><br> Noise Level: 108 dB<br> Mounting Type: Self-Adhesive<br> An alarm need 2 AAA alkaline batteries ( not included )<br> They can work for at least a year with low-consumption design<br> Low battery reminder: When the battery is low, the red indicator light will flash 1 per second, reminding you to replace the battery in time.<br><br> <b>Package Including:</b><br> Door Alarm<br> Magnet Sensor<br> Adhesive Tape<br> User Manual<br>

• 【Adjustable Time Delay】Features four optional delay settings (3/15/30/60 seconds) before the alarm or chime sounds, helping prevent unwanted alerts from brief or accidental openings.
• 【Convenient 4-in-1 Function】Combines 4 modes in one device, providing clear reminders and added protection for doors, fridges, and more.
• 【Volume Control】Offers 3 adjustable volume levels (97dB, 104dB, 108dB) so you can choose the right level for different rooms and situations.
• 【Easy Installation】Peel and stick design — no wiring or tools needed. Simply mount the main unit and magnet within 0.4 inches of each other and align with the indicator mark.
• 【Multi-Purpose Use】Suitable for safes, cabinets, refrigerators, freezers, sliding doors, offices, apartments, hotels and more, helping you monitor different areas with ease.