SanJie Door Left Open Alarm&Door Chime,Instant/30s/1min/2min Delay,2 Sensor — Open-Box, 13% Off

LOUD 0-110dB ALERTS THAT GET YOUR ATTENTION - Choose from 5 volume levels, including silent LED notification and powerful 110dB alerts. Whether you need a door alarms for security or a door open alarm to monitor activity, the loud sound helps notify you immediately when a door or window is opened.

5 SMART MODES INCLUDING INSTANT & DELAYED ALERTS - Use as Door Alarms When Opened with instant notification or select 30-second, 1-minute, or 2-minute delay modes. If a door remains open, recurring reminders continue until closed, helping reduce forgotten doors, gates, refrigerators, and freezers.

27 CHIMES & CUSTOMIZABLE ENTRY NOTIFICATIONS - Works as a door chime for when door opens with 27 selectable melodies. Ideal as a door entry chime for business, classroom, office, shop, or home entryway. Easily switch between welcoming chime sounds and security alert modes.

EASY INSTALLATION WITH INCLUDED BATTERIES & STRONG ADHESIVE - Install in minutes using the included adhesive tape and pre-included 2AAA batteries. This door sensor alarm functions as one of the most versatile door and window alarms for monitoring entry points throughout your home. For best performance, keep installation spacing under 0.98 inches when closed.

27 Tones & 5 Volume Levels:Personalize your alerts with 27 tones and 5 volume levels up to 110dB. Choose a quiet LED alert, gentle door chime sensor, or loud door security alarm when opened. Ideal for custom window alarms

IDEAL FOR KIDS, SENIORS, SLIDING DOORS & DAILY MONITORING - Use as a door alarms for kids safety solution to help monitor toddlers, children, or loved ones who may wander unexpectedly. Also works well as a sliding door alarm for patio doors, glass doors, cabinets, and windows, providing added awareness and peace of mind.

LOW BATTERY WARNING & MEMORY FUNCTION - The built-in low battery indicator flashes red when power is running low. Your selected chime, volume, and mode settings are remembered during normal use, helping maintain consistent operation without repeated adjustments.

Protect your family, home, and business with the Sanjie Door Alarm. Designed as a versatile security and notification solution, it works as a door chime, door sensor chime, door open chime, and door chime sensor for a wide variety of monitoring needs. Whether you're looking for door chimes for home, a wireless door chime, or a wireless door chime for business, this compact device provides instant awareness when doors or windows are opened. It can be used as a door sensor chime when door opens, business door entry chime, or a convenient alert system for offices, classrooms, retail stores, apartments, garages, and entryways. Beyond everyday entry monitoring, many families use it as a toddler door alarm, door alarms for dementia solution, or door alarms for home security to help supervise children, seniors, and loved ones who may wander unexpectedly. It also works as a practical alarm for doors when opening and can help monitor patio doors, sliding glass doors, cabinets, and restricted-access areas. The sensor can also be used for refrigerators and freezers. Use it as a fridge door alarm, refrigerator door alarm, freezer alarm, freezer door alarm, refrigerator alarm open door reminder, or fridge alarm door open notification to help prevent energy loss and food spoilage. For pool safety awareness, it can be installed on doors leading to pool areas and used as a pool door alarm, pool alarms for doors, door alarm for pool, door alarm for pool safety, pool door alarms home solution, pool door alarms for home, sliding door alarm for pool, sliding door pool alarm, pool gate alarm, pool alarm for sliding glass door, or door pool alarm for home. The adjustable volume and multiple operating modes allow you to customize alerts for different situations. With easy installation, included batteries, low battery warning, and customizable chime settings, Sanjie helps provide greater awareness, convenience, and peace of mind every day.