Vedard Security Alarms Store No.508818
Fujian China (Mainland)
Contact Seller
Contact Now
Home > Store Home > Products > wireless alarm accessories, IR Detector

Wireless door sensor | Magnetism sensor | Door/window contact | intrusion detection

Rated 5.0/5 based on 1 customer reviews 100.0% of buyers enjoyed this product! (1 votes) 1 order
US $73.68 / lot
8 pieces / lot , US $9.21 / piece
Bulk Price
14% off (6 lots or more)
Delivery: days (ships out within 2 business days)
lot (998 lots available)
Purchases are limited to 998 lots
Total Price:
Depends on the product properties you select
US $ (Approximately )

This product can't be shipped to the selected country.

Item specifics

Place of Origin:
Fujian China (Mainland)
Model Number:
KS-21AW/ KS-20BW
Brand Name:
Emit Frequency::
433.92MHz or 315MHz
Emit Distance::
250m (in open area)
Emit Power ::
Alarm Current::
Input Power::
DC12V 23A Battery
Standby Current::
Working temperature::
mounted way::
with screw or by adhesive tape
wireless transmitter::
adopt SAWF

Product Description



Wireless door /window contact designed with SAWF for stable wireless alarm signal transmittance.  For door /window sensor, easy installment, For home security and home alarm, intrusion detection to prevent crime. 



1. Low power consumption with static current less than 5uA.

2. With low battery voltage indicator.

3. Wireless emit distance in open area is about 100m.

4. KS-21AW is used with KS-258B, KS-858, KS-898 (Frequency 433.92MHz)

    KS-20BW/CW is used with KS-298, KS-998 (Frequency 315MHz)


Input Voltage:DC12V 23A BatteryStandby Current:<=3uA
Alarm Current:<=15mAWorking temperature:-20C~+55C
Emit Frequency:


315MHz (20BW/CW)

Emit Power :>=10mW
Emit Distance:250m (in open area)Dimension:37mm*65mm*17mm


KS-21AW user manual_Page_2.jpg

Packaging Details

Unit Type:
lot (8 pieces/lot)
Package Weight:
0.400kg (0.88lb.)
Package Size:
15cm x 9cm x 6cm (5.91in x 3.54in x 2.36in)


Calculate your shipping cost by country/region and quantity.
Ship to:

Packaging Details

Unit Type:
lot (8 pieces/lot)
Package Weight:
0.400kg (0.88lb.)
Package Size:
15cm x 9cm x 6cm (5.91in x 3.54in x 2.36in)


Our Buyer Protection ONLY protects Payment Methods on AliExpress as below:
  • Bank Transfer
  • QIWI
  • webmoney
  • Boleto
  • Yandex
  • Doku
Report item

Store Categories

Service Center

Company Info - Partnerships

Online Shopping - Buy - Sell - All Promotions - My Orders - Help - Site Map - Customer Service - About AliExpress - Mobile Site

Browse Alphabetically: All Popular, Wholesale Product, Promotion, Price, Cheap, Compare, Reviews, Dollar Deals
French, German, Italian, Japanese, Korea, Netherlands, Portuguese, Russian, Spanish, Arabic, Thai, Turkish, Vietnamese, Hebrew

Alibaba Group | Taobao Marketplace | | Juhuasuan | AliExpress | | | Alimama | Alibaba Cloud Computing | YunOS | AliTelecom | HiChina | Taobao Travel | Xiami | Laiwang | DingTalk | Alipay

Product Listing Policy - Intellectual Property Policy and Infringement Claims - Privacy Policy - Terms of Use - Safe Trading Tips - Report Intellectual Property Right Infringement