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Availability:
In Stock.
Arrives
Tuesday, Oct 27
Number of Items: 2
Set name: No AAA batteries
Features
- Easy to install and operate - pool/gate/sliding door alarm with remote. Easily disarm it with remote outdoors when you return home
- Multipurpose - Magnetic Contact Door Alarms/Doorbell/Door Alarm for Pool/Refrigerator Door Alarm/Curious Door Alarm
- 4-Level Volume & Chime Customization: This system offers four adjustable volume settings(80-110db) and four door chime options, optimized for versatile use. High-volume alerts suit anti-theft security, while gentler doorbell tones support child/elderly safety monitoring detecting unauthorized exits, unsupervised access to refrigerators/cabinets, and similar scenarios
- Child & Dementia Safety: Perfect for monitoring wandering kids or elderly patients. Receive instant alerts if they open exterior doors, pool gates, or bedroom windows
- DIY Door Security System: Tool-free setup in minutes using included adhesive stickers (no wiring/drilling). Features full remote control (up to 160ft range), 1+ year battery life (main unit batteries not included), and low-voltage alerts.
Color: white
Brand: HENDUN
Power Source: Air Powered
Compatible Devices: Home Security System
Product Dimensions: 3.3"L x 1.5"W x 0.59"H
Power Source: Air Powered
Compatible Devices: Home Security System
Battery Description: Alkaline
Number of Batteries: 1 12V batteries required.
Voltage: 12 volts
Control Method: Remote
Audible Noise: 110 db
Mounting Type: Door Mount
Maximum Range: 160 feet
Sensor Technology: Contact Sensor
Color: white
Item Dimensions L x W x H: 3.3"L x 1.5"W x 0.59"H
Item Highlight: Window Alarm Ring Door Sensor Home Security Pool Gate Alarm Kids Safety Magnetic Contact Sensor Garage Apartment
Brand: HENDUN
UPC: 664248657237
Number of Packs: 2
Item Weight: 1.6 ounces
Unit Count: 2 Count
Size: 2 Count (Pack of 1)
Manufacturer: Changzhou Hengdun Electronic Technology Co Ltd
Number of Items: 2
Built-In Media: Detector
Model Number: SF03RCD
Mfr Part Number: SZSF03R
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Oct 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
These are perfect if you have children or elderly people who elope. These are easy to install, extremely loud for alerts, and very simple directions to program the remote.
Reviewed in the United States on December 29, 2024 by Marriah D
I tried out a few different options for a DIY home alarm system and these were the ones that absolutely fit the bill. I started out with a pair of them to test out and ended up buying 3 more sets. Why? 1) Extremely easy to set up. There is a little give in the space needed between the magnets and the actual alarm, so if your windows/ doors and frames aren't flush, no problem 2) Range! I can arm and disarm the units in my basement from my second floor. I was very surprised and happy about this! 3) Compatibility of components- I had to watch a Youtube video to learn how to do this, but it turns out, you can pair every single transmitter to work with ALL the alarms, and ALL transmitters can be paired to activate every single alarm. 4) Abundance of key fob transmitters. Every alarm comes with a transmitter so everyone in the family can have one that works the same as the next 5) Panic button: because I can activate the alarms from such a long distance, I use one of the transmitters as a panic button in my bedroom. If I hit the "lightning bolt" button, I can get ALL the alarms in the entire house to go off together. If that doesn't scare the $%#t out of an intruder, then nothing will. 6) Doorbell function: you can set the alarms to give off a double ring, just to alert you when someone opens a door or window. It's pretty loud, but would be good if you're outside or in the basement and want an alert of this kind. 7) Cost: I paid a lot more more for a lot less when I first started testing out different components for my home security. I returned the others after I saw what this system could do. 8) Power: I like that they run on batteries, so if power gets cut, they will still work. Cons? No internet alerts when your system gets set off. This is a real time, intruder focused system, not a monitoring system (so no monthly fees- another pro). To address this, I also bought a couple of Reolink security cameras to provide eyes into my home. They alert me if motion is detected inside the house. Because it has 2-way audio, I should be hearing a hell of a racket if someone actually gets in. Anyway, I am very happy with the synergy between these two systems.
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Reviewed in the United States on October 11, 2021 by Xine
It is very loud. When arming it and disarming it it is loud. Also. Three beeps for arming one beep for disarming. It would be nice if those could be muted but you get what you get and it's nice and loud and so far it's been working exactly the way we wanted it to.
Reviewed in the United States on December 7, 2024 by Amazon Customer
Great price, easy installation and LOUD!
Reviewed in the United States on January 12, 2025 by Robert Wood
This product is superior to others for the fact that it has a ALARM & A CHIME NOISE THST ISNT SUPER LOUD AS I ISE IT FOR WHEN MY DOOR IS OPENED EVERYTIME I KNOW .... GREAT FOR BUIDNESS OWNERS TOO AND IT COMES WITH A REMOTE FOR EACH ONE AND YOU CAN SWITCH IT FROM CHIME TO ALARM LETSCSAY WHEN YOU CLOSE BUISNESS WICH IS LOUD AND SCARE AWAY INTRUDERS WITH LIUD SIRENS GOING .... AND TBE REMOTE YOU CAN TURN IT OFF TOO SO NO SOUND IS MADE WHEN SOMEONE WALKS IN FOR SOME REASON OR A CERTAIN OERIOD OF TIME OF USING THE DOOR ALOT !!!! I USE THIS AT MY HOME AS IT GREAT TO IF YOU RLRENT A ROOM YOU CAN HEAR FROM DOWNSTAIRS IF A ROOM MATE B IS GOUNG IN YOUR ROOM ... VERY VERY EASY TO INSTALL WITH JUST DOUBLE SIDED TAPE IT COMES WITH .... THERE ARE SCREWS FOR THE SOINY MAGMET PART BUT IF NEEDED FOR SOME REASON ??? BUT I PUT IT UP INSTALED IN LESS THEN A MINUET !! I did alit if research and alit of people complaining of these similar ones Alarms being way too loud and having to cover it up with duct tape or ghetto rig it together ..... WELL THEY HAD NO CHIME SOUND .... WICH IS STILL LOUD ENOUGH , FOR A 3000 SQFT HOUSE TO BE HEARD.... ITS NICE TO HAVE THE CHOUCE AND OPTION ... YOU CAN ALSO USE THE REMOTE TO HOT THE ALARM BUTTONNAS A PANIC BUTTON FOR SAFTEY OR TO ALERY SOMEONE THERE IS TROUBLE !!!
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Reviewed in the United States on September 18, 2023 by Scott Colantropo
Small magnetic senor has 2 small screw holes for mounting or use double-sided tape, the larger Alarm sensor has no screw holes for mounting and need to use Double Sided Tape (included). Does not include AAA batteries as each requires 2 or total of 4 batteries. The Remote must have a watch/calculator battery inside as I did not need to insert/install any battery. The Siren alarm is very loud and continuous as the Door Chime is half as loud and sounds like the small ringing/chime you get when entering a Small store. Read that these Door Alarms will drain the AAA batteries in less than 2 weeks. The Remote control has 4 functions as in Lock, Unlock, Siren, and Bell. On "Lock"/Off "Unlock". Need to place the Remote Control unit in a safe and inconspicuous place. The Remotes are not Labeled so you may want to. Currently using the Door Chime setting because the Siren can wake up everyone in the household or if you reside in an Apartment complex will annoy your neighbors. If alarm is triggered in an apartment and no one home able to turned it off, nice way make your neighbor angry and want to bust your door down. Only have used it for 1 day, and No False Alarms - going off by itself. Will need to keep tabs because said it may drain the AAA batteries rather quickly. A set for $26 is cheap. Hopefully they will work for a couple years or more. Otherwise, may need to spend a few Hundred Dollars and pay out for a Security System with alert notification like ADT. All depends on your needs and valuables trying to prevent theft.
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Reviewed in the United States on October 26, 2024 by Amazon regular Customer
bought them for my daughter to keep the grand kids from escaping lol. They work as intended
Reviewed in the United States on February 1, 2025 by Stacy Goodrich Crazy Crafty Family
serves the purpose well.The remote feature makes these a winner in my book.Easy to use and more secure than ones that have a side on /off switch. would recommend.
Reviewed in the United States on October 29, 2024 by L. fawcett