[Volume Adjustable Door Alarm] This door alarm is used to alert you when a door or window is opened by 0-120DB alarm or ding-dong sound.It has 4 working modes, it prevents your children from sneaking out, it can be used as a doorbell for people with dementia patients and it is a perfect wireless home security alarm system for kids safety, burglary, home security, garage,and business security.[4 Working Modes Available]#1 Instant Alarm(It will alarm loudly if the door is open, and it will stop as soon as your door is closed)#2Entry Alert(Rings"Ding dong" once as a welcome tone )#3 Door Closing Reminder(Emits "didi"sound every 10 seconds to remind you by repeated sound until the door is closed).#4 Instruder Alarm (Alarm will last for 1 minute if your door is being open)[Easy to Install] This door alarm comes with double-sided adhesive and screw bag, you just need to peel off the sticker and install it on the door and door frame,or use the screw to mount on the door,remember to keep them less than 0.6in apart and on the same plane, and it will work fine.[Easy to Use] This door alarm system is very easy to use, you just need to press th ON/OFF button to turn on the door alarm,press the volume button to adjust the volume, press the set key choose the working mode by the "bibi" sound, after the mode is selected,it will work well,our manual have detailed instructions to guide you to use our door alarm sensors.Backed by our lifetime warranty, if you experience any quality issues with your SanJie Door Alarm or have concerns about its performance, feel free to contact us via at any time.

Pool Door Alarm

Door Alarms for Kids Safety

Prevent your child from entering the pool without your knowledge.

Door Sensor Alarm

Door Security Alarm

Protecting the safety of your property.

Door Alarms

"ding-dong" for entry welcome

You can use this door alarm in a store to alert you when a customer enters.

Door Ajar Alarm

Notice for Your Pets

Remind you when your pet goes out or comes back in.

Window Alarms

Door Alarms for Kids Safety

Prevent your child from opening a door or window to get out without your knowledge.

Instant Alarm

·It alarms when door opens,it stops alarm when door closed.

·For Home/Kids Safety/Dementia Patients/Pet

Entry Alert

·After the door is opened, the sensor makes a "ding-dong"beep then stops.

·For businesses,store,offices

Closing Reminder

When the door is opened , the sensor emits "dididi..."sound every 10 seconds until door is closed.

Instruder Alarm

·Alarm will last for 1 minute if your door is being open.

·Scaring Away Thieves/Anti-theft alerts

1 Pool

2 Caravans

3 Store

4 Pet

5 Window

Door Open AlarmWindow Alarmsfor Home Security

Pool Door Alarm

Door Alarms for Kids Safety

Prevent your child from entering the pool without your knowledge.

Door Sensor Alarm

Door Security Alarm

Protecting the safety of your property.

Door Alarms

"ding-dong" for entry welcome

You can use this door alarm in a store to alert you when a customer enters.