Sanjie Door Alarms When Opened,Door Window Alarm Sensors for Kids Safety/Home Security/Pool/Garage/Dementia/Toddler/Travel Security,Easy to Install,Volume Control/Loud Alert,Long Battery Life,8 Pack
Sanjie Door Alarms When Opened,Door Window Alarm Sensors for Kids Safety/Home Security/Pool/Garage/Dementia/Toddler/Travel Security,Easy to Install,Volume Control/Loud Alert,Long Battery Life,8 Pack
Couldn't load pickup availability
- 24/7 Customer Support
- Risk-Free 30-Day Returns
- Fast & Reliable U.S. Shipping
Contact Information
Contact Information
30-Day Hassle-Free Returns
30-Day Hassle-Free Returns
Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.
✔ Easy return process
✔ Fast refunds
✔ No hidden conditions
Fast U.S. Shipping
Fast U.S. Shipping
We ship within the United States only — no international delays.
✔ Processing time: 1–2 business days
✔ Delivery time: 3–7 business days
✔ Real-time tracking available
👉 Track your order anytime from the header via Track Order
About This
- Peace of Mind - Door window alarms guard you and your home's security. Alarms can also keep the safety of kids as well as the elderly who need care
- Wide Use - Magnetic sensor will alarm or chime if separated.Can be used in pool, home, apartment, store, office, garage, RV, warehouse, hotel and more. Alarm sensor can be installed on sliding door/window, cabinet, drawer, etc
- Easy to Install - Tear off the 3M double-sided tape on the back of the wireless alarm and install it on the door or window, etc. Turn on the switch, set the mode and ready to use. It is recommended that the alarm be installed indoors
- Volume Control - Alarms have 3 modes:125dB Alarm(loud enough), 100dB Alarm, 100dB Chime (dingdong 2 times). When the door window sensor is opened,it will alarm continuously for 34 seconds and will not stop until the window or door is closed
- Long Battery Life - Powered by 3 LR44 button batteries supplied. Normal life of the alarm is up to 16 months. When the alarm is in low battery, the indicator light will flash to alert you
Overview
- Color : White
- Brand : SanJie
- Number of Batteries : 3 LR44 batteries required.
- Item Weight : 8 Ounces
- Manufacturer : SanJie
WE MAKE SMART LIVING SIMPLE.
OUR TEAM HELPS SECURE YOUR HOME.
SmartHomeValueHub helps homeowners create safer, smarter, and more convenient living spaces with trusted smart home solutions built for everyday life.
From smart security cameras and smart locks to video doorbells, thermostats, lighting, and home automation essentials — we focus on products that improve real comfort, safety, and efficiency.
Our goal is simple: better protection, lower energy costs, and smarter daily living for every home.
Why Homeowners Trust SmartHomeValueHub
✔ Easy Setup
✔ Matter Compatible
✔ Smart Security
✔ Energy Saving
50K
HaSMART DEVICES INSTALLEDppy Clients
15+
YEARS OF SMART HOME EXPERTISE
98%
CUSTOMER SATISFACTION RATE
365
RELIABLE SUPPORT YEAR-ROUND
Smarter Security. Lower Bills. Easier Living.
SMART HOME FAQ
Yes — many modern devices support multiple platforms.
Matter-certified devices can work across Alexa, Google Home, and Apple HomeKit at the same time.
Not always.
Smart bulbs, plugs, cameras, and video doorbells are often easy DIY installations, while full security systems may need professional setup.
Many devices still work manually or through local control.
You may lose remote app access, but locks, lights, and thermostats often continue basic functions.
Security depends on the device and setup.
Use strong passwords, trusted brands, firmware updates, and secure Wi-Fi for better protection. Privacy and unauthorized access are common concerns in smart homes.
Most homeowners start with:
Smart Security Cameras
Smart Door Locks
Smart Thermostats
Smart Plugs
Video Doorbells
Yes.
Smart thermostats and smart plugs help reduce wasted energy by automating heating, cooling, and power usage.
It depends on your ecosystem.
Alexa → widest compatibility
Google Home → strong for Android users
Apple HomeKit → best privacy
Home Assistant → advanced control
Smart Home Tips, Trends & Buying Guides
-
Best Smart Home Security Cameras for Safer Homes
Discover how smart home security cameras improve safety with AI detection, wireless monitoring, night vision, and real-time mobile alerts for modern American homes.
Best Smart Home Security Cameras for Safer Homes
Discover how smart home security cameras improve safety with AI detection, wireless monitoring, night vision, and real-time mobile alerts for modern American homes.
-
Smart Home Hubs Comparison Guide for Smarter Li...
Compare Zigbee, Z-Wave, and Matter smart home hubs to find the best system for better automation, stronger security, and smarter connected living.
Smart Home Hubs Comparison Guide for Smarter Li...
Compare Zigbee, Z-Wave, and Matter smart home hubs to find the best system for better automation, stronger security, and smarter connected living.
-
Smart Thermostats & Energy Saving Guide for Ame...
Learn how smart thermostats reduce utility bills, improve HVAC efficiency, and create smarter home comfort with automation and remote temperature control.
Smart Thermostats & Energy Saving Guide for Ame...
Learn how smart thermostats reduce utility bills, improve HVAC efficiency, and create smarter home comfort with automation and remote temperature control.
