Filters

Under $20 Security System Sensors

Shop the best prices on 1,383 great value under $20 security system sensors. Shopping for security system sensors is easy with Fruugo, with SALE discounts, offers and savings on Ydcy and Jtgg. Buy security system sensors online safely with Fruugo, with secure payment and fast shipping to New Zealand.

Filters
1 - 32 of 1,383
Garage Door Bracket for Ring Alarm Contact Sensors 2nd Gen (Sensor Not Included), Garage Door Securi
$14.95 Save $10.00 RRP: $24.95
New Tuya ZigBee Smart Vibration Sensor Real Time Monitoring Door Window Detection Alarm Smart Security Protection System
$14.95 Save $10.00 RRP: $24.95
Tuya Zigbee 3.0 Smart Contact Detectors Security Gate Door Window Sensor ducer Smart Life Home
$15.95 Save $3.00 RRP: $18.95
1/4 Inch Ring Alarm Magnet Riser,5 Pack Mount to Any Doorway, Window, and Entryway,Ring Sensor/Magne
$21.95
Zigbee Smart Door Window Sensor Wireless Mini Alarm Sensor for Mi Home
$19.95 Save $59.05 RRP: $79.00
Anti-Theft Refrigerator And Freezer Alarm, Door Window Left Open, Reminders At 30 Seconds 0830 Edition 0109
$18.95 Save $60.05 RRP: $79.00
Wireless Magnetic Sensor Door Entry Alarm with for Home Security
$11.95 Save $5.00 RRP: $16.95
Tuya Zigbee Door and Window Sensor Smart Home Automation Security Protection Smartlife APP Alarm Re
$10.95
Sensor Bar Compatible With Wii, Replacement Wired Infrared Ray Sensor Bar
$4.95 Save $6.00 RRP: $10.95
Garage Door Bracket for Ring Alarm Contact Sensors 2nd Gen (Sensor Not Included), Garage Door Security Accessory
$14.95 Save $8.00 RRP: $22.95
Tuya Wifi Door Sensor Window Entry Sensor Security Burglar Magnetic Sensor Alarm Smart Life for APP Remote Control
$17.95 Save $9.00 RRP: $26.95
Light Sensor DC 5V 12V USB Wire Day Auto-on Light Sensor Cable for Home Security and Lighting
$12.95 Save $6.00 RRP: $18.95
Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC with Adjustable Bracket
$21.95 Save $11.00 RRP: $32.95
4in1 Multi-Functional Door Magnetic Alarm Touch Button Door and Window Alarm Displacement Alarm Sensor 125dB
$19.95
Tuya WiFi Smart Door Window Sensor Home Indoor Door Magnetic Detector Compatible with Alexa & Google Home White
$19.95 Save $9.00 RRP: $28.95
Home Security Fence Gate 12V 24V Single Beam Infrared Beam Alarm Detector Induction Outdoor Explosion-Proof
$21.95 Save $11.00 RRP: $32.95
Tuya WiFi Smart Door Window Sensor Home Indoor Door Magnetic Detector Compatible with Alexa & Google Home Black
$18.95 Save $10.00 RRP: $28.95
Tuya Wifi Door Sensor Window Entry Sensor Security Burglar Magnetic Sensor Alarm Smart Life for APP Remote Control
$17.95
Tuya Smart Home ZigBee Temperature and Humidity Sensor Indoor Thermometer Monitor Works for Alexa Google Smart Life
$20.95 Save $11.00 RRP: $31.95
CC308+ Radio Wave Full-Range WiFi RF GSM Device Finder Signal Detect Camera Wireless Camera Lens Signal Detector
$18.95 Save $10.00 RRP: $28.95
5 Set Wireless Burglar Alarm Door and Window Magnetic Sensor Alarm
$16.95 Save $1.00 RRP: $17.95
Magnetic Sensor Home Door Window Entry Warning Alarm Switch
$20.95 Save $1.00 RRP: $21.95
UTP 4 Channel Passive Video Balun Transceiver
$20.95 Save $1.00 RRP: $21.95
Tuya Zigbee Smart Vibration Sensor Tilt Detector
$19.95 Save $1.00 RRP: $20.95
Magnetic Door Switch RC-33 NC Recessed Wired Sensor Alarm (10 Sets)
$17.95 Save $1.00 RRP: $18.95
Smart Wifi Temperature and Humidity Sensor for Home Iot Device
$19.95 Save $1.00 RRP: $20.95
Tuya Zigbee Door Window Sensors Wireless Smart Life Magnetic
$18.95 Save $1.00 RRP: $19.95
2024 Aqara Light Sensor T1 Zigbee 3.0 Brightness Sensor Smart Home Light Change Controlled for Home
$18.95 Save $18.00 RRP: $36.95
Wireless Door Window Alarm Sensor 120dB Loud Vibration Alarm for Home Security Theft Prevention Easy Installation Battery Powered
$14.95 Save $8.00 RRP: $22.95
Auto-on Night Light Sensor Cable DC 5V 12V USB for Home Security
$8.95 Save $5.00 RRP: $13.95
Compact Magnetic Security Tag Remover, EAS Hard Tag Unlocking Tool for Retail Stores, Apparel Shops, Supermarkets, and Sports Equipment Tags
$21.95 Save $52.05 RRP: $74.00
Tuya Wifi Door Window Sensor Smart Anti-Theft Alarm Real-Time Alerts App Control Smart Home Security
$19.95