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Shop the best prices on 11,307 great value security system sensors. Shopping for security system sensors is easy with Fruugo, with SALE discounts, offers and savings on GreenZech, Ydcy, Woosien and more. Buy security system sensors online safely with Fruugo, with secure payment and fast shipping to Singapore.

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2,785 - 2,816 of 3,200
Refrigerator And Freezer Alarm, Door Left Open, Reminders At 60 Seconds Or More-2025-ss
$17.95 Save $8.00 RRP: $25.95
DW2 Wireless Door Window Sensor, 7x3.1x1.9cm, Wi-Fi Alarm
$19.95 Save $10.00 RRP: $29.95
Alarm when freezer door opens, security window alarm, 4 in 1 sensor doorbell opens
$74.00 Save $35.00 RRP: $109.00
Tuya Zigbee Solar Light Sensor Ip65 Waterproof Outdoor Brightness Detector With Real Time Luminance unbrand
$32.95 Save $7.00 RRP: $39.95
Aqara Light Sensor T1 Zigbee 3.0 Brightness Sensor Smart Home Light Change Controlled For Home unbrand
$39.95 Save $24.05 RRP: $64.00
Wireless Door Alarm With Remote Windows Open Alarmshome Security Sensor Pool Alarm For Kids Safety Sliding (2 Pack)
$64.00 Save $65.00 RRP: $129.00
NEO COOLCAM Mini Smart Door Window Sensor - Wireless Z-Wave Plus, Instant Alerts
$59.00
Magnetic Door Sensor 868.4mhz Eu Window Sensor Z-wave Plus Contact Sensor Smart Home
$64.00 Save $20.00 RRP: $84.00
Brake Wheel Speed Sensor 4013251 Quick Response Real Time Monitoring Precise Adjustment Replacement for Polaris
$84.00 Save $85.00 RRP: $169.00
Wireless Door/window Sensor Enable Smart Linkage Between Wifi Devices For Via Ewelink App,10pcs GreenZech
$209.00 Save $340.00 RRP: $549.00
Bed Wetting Wireless Alarm Urine Sensor Rechargeable Pee Wet Alarm With Receiver
$69.00 Save $30.00 RRP: $99.00
Wireless Door Alarm With Remote Windows Open Alarmshome Security Sensor Pool Alarm For Kids Safety Sliding (2 Pack)
$64.00 Save $65.00 RRP: $129.00
Wireless Door Alarm With Remote Windows Open Alarmshome Security Sensor Pool Alarm For Kids Safety Sliding (2 Pack)
$64.00 Save $65.00 RRP: $129.00
Wifi 2 In 1 Smoke Carbon Monoxide Combo Detector Co Gas Smoke Alarm Sensor 85db Alarm Sound Smart Alarm Security System
$149.00 Save $50.00 RRP: $199.00
Zwave Plus Door Window Sensor Contact Sensor Eu 868.4mhz Instant Alert Magnet Lock Door Window
$64.00
24Pcs Door and Window Alarm Electronic Alarm Window Alarm Sensor Anti-Burglary Window Security Alar
$64.00
Wireless Door Alarm Window Opener Alarm Home Security Sensor Pool Alarm Child Security Anti-Theft (2 Pack)
$84.00 Save $35.00 RRP: $119.00
Wireless Door Alarm Window Opener Alarm Home Security Sensor Pool Alarm Child Security Anti-Theft (2 Pack)
$79.00 Save $170.00 RRP: $249.00
Magnetic Contact Sensor Burglar Alerts for Home Security Wireds Security Window Gate Contact Sensor Alarm Anti-Theft
$18.95
AUBESS Tuya Zigbee Smart Door Sensor Door Open Closed Detectors Security Protection
$149.00 Save $20.00 RRP: $169.00
PB-69W WIFI Smart Wireless Magnetic Door and Window Sensor
$19.95
Window alarm for home protection - 10 pack wireless magnetic door sensor
$99.00 Save $20.00 RRP: $119.00
Tuya Zigbee Light Sensor Luminance Detector Sensor Smart Home Automation App Control Tuya Light Detector
$18.95
IR beam detector for intrusion alarm system with high sensitivity
$54.00 Save $30.00 RRP: $84.00
Dual White Beam Photoelectric Sensor Detector Beam 10m/30FT Distance for Auto-Door
$52.95 Save $16.05 RRP: $69.00
Window contact sensor for white door with magnetic reed switch
$26.95 Save $13.00 RRP: $39.95
Door Open Alarm Smart Door Window Sensor Smart Home Door Detectors Door and Window Burglar Alarms
$13.95 Save $17.00 RRP: $30.95
Stainless Steel Float Switch for Tank Liquid Water Level Sensor Double Ball Float Switch for Tank Pool Flow Sensors
$30.95
Wireless Door Window Magnetic Sensor Alarm 120dB Anti-theft 300ft Remote Control Detectors
$64.00 Save $40.00 RRP: $104.00
Tuya WiFi Smart Door Sensor Wireless Magnetic Door Window Open Closed Detectors Automation
$21.95 Save $7.00 RRP: $28.95
2025 Latest Model Door Alarm Sensor 120db Loud Wireless Door Alarm Hanging Con...
$28.95 Save $25.05 RRP: $54.00
Zigbee Door Magnetic Sensor Tuya Smart Tuay Window Door Opening Home Reminder Anti-theft Induction
$36.95 Save $27.05 RRP: $64.00