24/7 Customer Ordering Via Web...

free shipping 315MHz or 433Mhz gsm Wireless Security Alarm System Door Sensor Window Entry door Detector

100 % of buyers enjoyed this product!
In stock
Price: US $3.74 Sale Price: US $3.48
45 days Money back
45 days Money back Returns accepted if product not as described, buyer pays return shipping; or keep the product & agree refund with seller.
On-time Delivery
On-time Delivery
Guarantees: On-time Delivery 60 days


Warm Reminder

China Post timeliness is uncertain.

European countries may need 15-30 days.

South American countries may need 20-60 days.

Russian Federation may need 25-90 days.

We do not recommend via China Post.

If this product is that you need urgent, please choose DHL Fedex EMS Aramex.

DHL Fedex EMS Aramex fees we have gone through accurate calculation, we recommend that you select them.


  • It has doorbell function, can remind user to set alarm
  • Both sides have magnets.
  • Easy to install and change batteries


  • Power supplied 12V battery(not include battery )
  • Transmission frequency: 433MHz ± 0.5 MHz
  • Sending distance: No obstacle 80m
  • static current: ≤10uA
  • Alarm current: ≤30mA(door bell not work) ≤80mA (door bell work)
  • Alarm distance: 20mm
  • Work condition: temperature -10 – 40 degree C
  • Humidity ≤90%
  • NOTE: ,default 433MHz.Take a message in your order which type do you need, 315MHz / 433MHz.or we will send 433MHz to you

Average Star Rating:
0 out of 5 (0 Ratings)
Name Rating Feedback
Shipping Company Shipping Cost Estimated Delivery Time
DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

Customers Who Bought This Item Also Bought

Price:  US $3.74 / piece
Sale Price:  US $3.48 / piece