Kerui Wireless Door Window Sensor Smart Home Security Alarm System
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SPECIFICATIONS
Alarm Type: The Alarm
Arming Type: FR Remote-controller
Brand Name: KERUI
Certification: NONE
Choice: yes
Communication Interface: WireLess
Display: No
High-concerned chemical: None
KERUI Model: D121
Kit Configuration: Door Sensor
Model Number: D121
Origin: Mainland China
Output Number: 1
Password Keyboard: No
Power: 2 AAA batteries
Size: 100*35*15mm
Smart home platform: Other
Video Interface: No
Zone Number: 20 remote control +40 detector
More Recommendations:
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 RANG
This wireless door alarm kit comes with a 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-FUCNTION 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.

Click the link below to buy accessories



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


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How long will it take to receive my order?
How long will it take to receive my order?
Most U.S. orders are estimated to arrive within 7–12 business days after processing. Orders to other eligible countries are also usually estimated at around 7–12 business days, depending on the product, carrier, and destination. However, delivery is not guaranteed, and some orders may take up to 7–25 business days because of carrier delays, customs, supplier processing, weather, or other shipping conditions.
What if my item arrives damaged, defective, or incorrect?
What if my item arrives damaged, defective, or incorrect?
Contact us within 7 calendar days of delivery. Please include your order number, checkout email, clear photos or video proof, and a short explanation of the issue. If approved, we may provide a replacement, refund, store credit, partial refund, or another suitable resolution.
Where can I find the full policy details?
Where can I find the full policy details?
For complete details about returns, refunds, shipping, delivery, privacy, terms and conditions, legal notices, and customer support, please review our policies under the Legal & Support section in the footer.
These policies explain important information about order processing, delivery timeframes, return eligibility, refund rules, customer responsibilities, and how to contact our support team for help.
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10% OFF NEXT ORDER
Place an order of $75 or more today, and we’ll send you a 10% discount code as a thank-you for your next purchase.


