Door Alarm, SanJie Door Left Open Alarm for Home Security - 2 Alert Modes Instant/Delayed Alerts 30s/1min/2min, 0-110dB, Door Open Alert for Kids Safety & Dementia Care, 27 Chimes for Home & Business
Product details
| Management number | 228177118 | Release Date | 2026/05/31 | List Price | US$17.19 | Model Number | 228177118 | ||
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- 【2 Alert Modes & 3 Sound Options】Choose Chime, Alarm, or Voice for both Instant and Delayed Alerts. This door alarm has 5 settings: Modes 1–2 are instant—Mode 1 rings once when opened; Mode 2 alerts right away, then repeats until closed (5s every 10s). Modes 3–5 are delayed (30s, 1min, 2min), then repeat if still open (10s on, 10s off, repeat). Alerts stop when the door closes or any sensor button is pressed.
- 【Door Alarms When Opened】Instant Mode: When you're relaxing or busy with household cleaning, you'll be instantly alerted if your kids opens the bedroom door or an elderly with dementia tries to leave home through the front door. It helps you stay aware of your family's movements at all times, giving you worry-free free time.
- 【Door Left Open Alarm】Delayed Mode: the device stays silent during daily entry and exit, then reminds you to close the door if it stays open after the preset delay. Use it on doors or windows to help prevent energy waste from AC cool air loss in summer or heat loss in winter. Also works on refrigerators and freezers to help avoid cold air loss, food spoilage, and potential safety concerns.
- 【Business Entry Chime】When your staff is busy restocking in the back, the door chime plays a clear “Ding-dong, hello, welcome” message as soon as a customer enters. It helps welcome customers while alerting employees right away. Even when the entrance is unattended, staff can hear the customer arrive and come forward quickly, making every guest feel warmly welcomed and well cared for.
- 【Home Security】While you sleep at night, this alarm instantly sounds a 110 dB siren if a door or window is forced open, or if someone opens a door to a restricted area such as a storage room or stockroom without authorization, alerting you right away to possible unwanted entry. It gives you valuable time to respond, so you can check the situation and act quickly to help protect your family and property.
- 【Drill-Free Installation】 This door open alarm uses strong 3M double-sided adhesive tape for quick, tool-free installation—no screws, no drilling, and no wall damage. Ideal for renters. No app or subscription required, with simple controls for easy everyday use.
- 【Battery & Volume】This door sensor chime is powered by 2 AAA batteries and lasts up to 12 months, so you don’t have to replace batteries often. A red indicator light alerts you when the battery is low. Choose from 27 chimes and 5 volume levels, from silent LED mode to a loud 110dB alarm, to customize alerts for your home or business.
- 【After-Sales Service】Video tutorials are available in the user manual and on the product page to help you get started. If you have any questions or run into any issues while using the product, please contact us through the order channel, and we will assist you as soon as possible.
| ASIN | B0GL7QCCJT |
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| Size | 3 Sensor |
| Color | Black 3 |
| Item Weight | 8.8 ounces |
| Manufacturer | SanJie |
| Description Pile | AAA Battery |
| Battery Cell Type | Alkaline |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Package Dimensions | 4.49 x 3.86 x 1.73 inches |
| Average Battery Life | 1 years |
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