Door Sensor Alarm, Remote Control 300ft 120dB Wireless Door Contact Sensor Anti-Theft Door Alarms for Kids
LOUDER ALERT
When the magnetic sensor is disconnected, the KERUI door and window alarm system will issue a loud 120dB warning to prevent theft and unnecessary access, preventing your child from sneaking out.

LONGER CONTROL RANGE
This wireless door alarm kit comes with wireless remote control for arming, disarming, SOS and doorbell options. It makes it easier to remotely control door/window alarms up to 300 feet


MULTI-FUNCTION ALARM SYSTEM
You can select the doorbell mode to draw attention when people enter, as a commercial doorbell when entering. With the SOS option, seniors can easily get help in an emergency. Good protection.
EXTENSIBLE& LINKANGE ALARM
You expand your home security alarm system with more alerts or remote controls,Infrared detector, door sensor, smoke detector, gas detector, emergency button.

EASY INSTALLATION
This anti-theft door and window alarm is easy to set up. Simply install it with the double-sided tape provided. Take just a few minutes

BATTERY REMINDER
When the battery is very low, the alarm volume will decrease and the alarm time will be shortened, reminding you to replace the battery [Not included]
Technical Parameter
Model: KR-D121
Working voltage: 3.0V (powered by 2 AAA batteries)
Standby current: <10uA.
Working current: <80mA.
Receiving frequency: 433MHz
Alarm time: 60 seconds
Alarm volume: 120DB
Alarm output: open the door and alarm after arming, and trigger the detector to alarm after arming

4 GREAT REASONS TO BUY FROM US:
- Over 37,000 happy customers worldwide
- Real people on our support team ready to help
- The finest materials and stunning design — all our products are developed with an obsessive dedication to quality, durability, and functionality
- We use the most secure online ordering systems on the market, and are constantly improving our software to make sure we offer the highest possible security

BUY WITH CONFIDENCE
We truly believe in the best customer support, meaning we will do whatever it takes to make sure you have a positive purchase experience. We respond to emails within 24 hours and always make sure all your concerns are answered ASAP.
- Easy Returns. All our products are backed with 60-day money back guarantee. Just contact us and we will refund the purchase price.
- Risk-Free Purchase: Our Buyer Protection covers your purchase from click to delivery so you can shop with peace of mind.
- 100% Satisfaction Guarantee: All our products are backed with 60-day money back guarantee. If for any reason you’re not completely satisfied with your purchase, contact us for a product refund. We’ll be more than happy to assist you.
Very high quality alarm. Despite the small size, it sounds very loud. Its function performs perfectly. Shop and I recommend it.
Good productoo
Perfecto
I'm missing command. Abrá que pedir a parte por lo demás seems good article. Comes without AAA batteries
The quality is excellent. Recommend
Quality at altitude, with a hologram, very cool costs its money, without batteries
Correct shipping and product in perfect condition. I 've tested the alarms and they all work properly, just like the remote. I'm also surprised at the sound power of the sensors. I will now have to evaluate the duration of the batteries that power the devices because I did not find information about the time they last until they need to be replaced.
Without the remote, it doesn't work.
ok
ok
The product corresponds to the description. The workmanship is excellent. Delivery about 1.5 month.
Although the sound is quite strident, it only emits two “bip when separating them. It's not a continuous sound until you put them back together or turn it off. It's not what I expected. No need to contact the store.
Single beep doorbell
Well packed! I'm coming!
Great works thanks ...........
Everything Super came quickly, I recommend
OK
Everything works, the call of the dead will raise ..
That's a great thing. Unfortunately, both parts are not connected by a magnet.
Nice instrument. Fast Delivery