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Shop the best prices on 5,756 great value security system sensors. Shopping for security system sensors is easy with Fruugo, with SALE discounts, offers and savings on GreenZech, Ebox, Nedis and more. Buy security system sensors online safely with Fruugo, with secure payment and fast shipping to Singapore.

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1,857 - 1,888 of 3,200
Garage Door Bracket for Contact Sensors 2nd Gen (Sensor Not Included), Garage Door Security Accessory
$10.95
2.4GHz Wireless TTLOCK Door Sensor
$26.95
4PCS NC Recessed Wired Door Window Contact Sensor, Hidden Magnetic Reed Switch for Home Security
$29.95 Save $14.00 RRP: $43.95
MC52 Magnetic Door Contact Reed Switch NC for Security Alarm Door Window Sensor, Compact Durable Design
$22.95 Save $11.00 RRP: $33.95
Magnetic Reed Switch NC Surface Mount Wired Door Window Contact Sensor Pack of 5 for Home Security
$33.95 Save $16.00 RRP: $49.95
Door and Window Alarm 110dB Loud Magnetic Sensor 4 Modes for Home Office Garage Refrigerator 9 Pack
$84.00 Save $45.00 RRP: $129.00
WiFi Door Window Sensor for Smart Home Security Compatible with Tuya App, Instant Alerts, Easy Installation
$22.95 Save $11.00 RRP: $33.95
Wired Roller Shutter Magnetic Overhead Door Contact NC with Bracket for Security Alarm
$27.95 Save $12.00 RRP: $39.95
Outdoor Perimeter Security Sensor with Dual Curtain Motion Detector and PetTolerant Detection
$139.00 Save $70.00 RRP: $209.00
DC 12v 24v Infrared Sensor Detector Door Safety Photocell Beam Sensor
$18.95
Home Security Door & Window Sensor Convenient Door Sensor Door Open Detection Alarm Keep Your Property Secure ABS Multicolor
$38.95
Door Open Detection Alarm Door & Window Sensor Simple Use Door Sensor Plastic Door Sensor Protect Home Improvement
$36.95
RF Signal Finder, Radio Frequency Detector, Portable Bug Detector Hidden Camera Detector for Hotels, Travel, Home
$139.00 Save $70.00 RRP: $209.00
Stylish & Practical Door Handle Effective Iron Gate Magnetic Sensor Homes & Office Door Window Alarm Simple Installation
$36.95
1 set Magnetic Door Sensor Alarm High-Security Door Window Alarm Plastic Suitable for Residential & Commercial Use
$36.95
Intelligent Audios Detection Sound Monitor Embedded in Security Camera Triggering Alarms on Suspicious Sounds Automatically Multicolor
$15.95 Save $2.00 RRP: $17.95
3pcs 433MHz Wireless Vibration Glass Break Detector, Adjustable Sensitivity, Compatible with Alarm Systems White
$20.95 Save $19.00 RRP: $39.95
Split Type Door and Window Sensor Door Magnet Sensor 60 Songs Protection Security Anti-Theft Volume Reminder EU Black
$17.95 Save $16.00 RRP: $33.95
Hidden Camera Detectors,Recharge Portable Hidden Camera Locator, 6 Sensitivity, Signal Scanner for els, Car, Office
$20.95 Save $25.00 RRP: $45.95
USB RF Gateway WiFi Direct Connection No Gateway Required for Mi Home App RF USB Learning Control Roller Shutter Door
$36.95 Save $32.05 RRP: $69.00
XIAO ESP32C6 60GHz MmWave Sensor MR60BHA2, Breathing Heartbeat Detection Sensor, ESPhome, Home Assistant
$89.00 Save $50.00 RRP: $139.00
Tuya Intelligent Pressure Sensor for ZigBee Gravity Detection Automation Scene Linkage 800mm
$43.95 Save $25.05 RRP: $69.00
Rearview Mirror Car Recorder Bracket Shape Universal Design For Taxis High-definition Real-time Monitoring 1Set
$28.95 Save $22.00 RRP: $50.95
2025 Essential Freezer Alarm: Wireless Thermometer with Industrial-Grade Chip, Multi-Sensor System, and Long Battery Life for Reliable Monitoring in：
$84.00
Motion Sensor Vibration Sensor Tilt Sensor Vibration Alarm for Tuya for Zigbee Smart Vibration Sensor Tilt Sensor
$31.95
Intelligent Home Automation Light Sensors Energy Saving Solar Light Detector for Outdoor Brightness Sensors Accessories Multicolor
$79.00
Wired Magnetic Contact Switch Window Door Sensor Home Burglar Alarm -Brown
$21.95
M-218E 10M range secure Beam relay output sensor for automatic doors
$69.00
Photoelectric Beam Sensor 13ft Gate Safety Sensor Weatherproof Fast Detection for Sliding Gates
$24.95 Save $13.00 RRP: $37.95
Tuya Smart WiFi SOS Button Emergency Wireless Security Alarm Panic Device for Elderly Kids for Safety Smart Life Remote
$15.95
Hidden Camera Detector RF Signal Scanner 4in1 Privacy Protection for Travel Hotel AntiSurveillance
$33.95 Save $16.00 RRP: $49.95
ZigBee Vibration Sensor Smart Home Door Window Alarm with RealTime Alerts and Long Standby
$24.95 Save $13.00 RRP: $37.95