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Shop the best prices on 10,820 great value security system sensors. Shopping for security system sensors is easy with Fruugo, with SALE discounts, offers and savings on GreenZech, Ydcy, Other and more. Buy security system sensors online safely with Fruugo, with secure payment and fast shipping to Singapore.

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2,497 - 2,528 of 3,200
433MHz Door Magnetic Contact Wireless Sensor Detector Switch for Home Garage Alarm Security
$15.95
Video Wall Controller 2X2 TV Wall Control Processor Support 4 Output 1080p High Definition Home Office Supply
$199.00 Save $110.00 RRP: $309.00
Tuya Smartlife APP Remote Control WIFI Gas Leakage Detector For Home Security Alarm System Combustiable CO Gas Sensor
$79.00 Save $170.00 RRP: $249.00
2Pack Freezer Door Alarm,3/15/30/60 Seconds Wireless Fridge Alarm,4 in 1 Door Sensor Doorbell Door Open Alarm Loud108dB
$59.00 Save $35.00 RRP: $94.00
Wireless Window/Door Open 52 Chime Entry Security Alarm Doorbell Magnetic Sensor
$64.00 Save $25.00 RRP: $89.00
Door Window Magnetic Contact Wired Sensor Detector Switch For Home Garage Alarm Security
$69.00 Save $40.00 RRP: $109.00
24pcs Door And Window Alarm Electronic Alarm Window Alarm Sensor Anti-burglary Window Security Alarm
$99.00
Wireless Door Open Sensor Alarm with 280M Range for Home Security
$59.00
Water Leak Alarm, Water Leak Detector Flood Detector Water Alarm Wireless Water Detector With Alarm Soundwifi Water Leak Alarm Overflow Wifi Flo
$25.95
Loud 130dB Wireless Door Open Detector Magnetic Alarm Sensors For Garage Door Window Real Time Alerts Easy Installation
$26.95
Refrigerator Freezer Alarm for Door Left Open 60 Second Reminder
$17.95 Save $36.05 RRP: $54.00
MC-31 Door Alarm Window Security Magnetic Door Switch Wired Magnetic Contact Screw-Terminal Reed Switch for Alarm 5Pairs Multicolor
$28.95
MC-38 Wired Door Window Sensor Wire Magnetic Switch Home Alarm System N.C Type Multicolor
$14.95
Door Window Sensors Detector Embedded Wired Magnetic Door Window Contact Reed Switch for Home Security Alarm System Multicolor
$14.95
Passage Alarm, Shop Bell, Wireless Alarm System With Motion Detector, Access Gift
$74.00 Save $95.00 RRP: $169.00
TUYA WIFI Temperature Sensor APP Remote Monitor Tuya Waterproof Temperature Sensor 2.4G WiFi Smart Home 1M
$18.95
Photoelectric Beam Sensor with Bracket, NPN Output for Industrial Automation
$19.95 Save $21.00 RRP: $40.95
Tuya Smart ZigBee Sensor Smart Temperature Humidity Detector RSH-ZigBee-HS03
$35.95
Battery Photocell 15m Lnfrared Beam Sensor DC/AC 12-24V Waterproof IP5 Automatic Gate Door Safety Sensor Alarm
$12.95 Save $7.00 RRP: $19.95
Tuya ZigBee Smart Door Sensor Door Open/Closed Wireless Detector Tamper Alarm Security System Work with Alexa Home
$15.95 Save $8.00 RRP: $23.95
433MHz Outdoor Waterproof Wireless Infrared Detector Long Range for Home Security Systems Wifi/GSM Alarms
$29.95 Save $17.00 RRP: $46.95
Glass Break Sensor Detector for Alarm System Wired Glass Break Sensor
$10.95 Save $6.00 RRP: $16.95
WIFI TUYA Smart Window Door Sensor Wireless Connection Door Detector Door Open / Closed Alarm- System
$11.95 Save $7.00 RRP: $18.95
433MHz Wireless 2 Beams Active Infrared Detector 60M Sensor Alarm for Outdoor Park Home Security Alarm System
$139.00 Save $70.00 RRP: $209.00
Wired Dual Beam Photoelectric Infrared Sensor Barrier Detector 100M Alarm Tamper Alarm for Park Burglar Alarm System
$37.95 Save $26.05 RRP: $64.00
Tuya Smart ZigBee Sensor Smart Temperature Humidity Detector RSH-ZigBee-HS03
$35.95
Refrigerator Freezer Door Alarm with 60-Second Alert, Adjustable Volume & Open Sensor
$22.95 Save $81.05 RRP: $104.00
Infrared Sensor Wireless Detector Gsm High Sensitive Security Alarm With Eu Plug For Store Warehouse Factory black
$84.00
Surface Mount Wired Security Window Door Contact Sensor Alarm MC-31 Magnetic Contact Reed Switch White 5 Sets 20x Screws
$26.95
Wireless Door Window Freezer Door Alarm 3/15/30/60 Seconds Adjustable Delay
$64.00 Save $40.00 RRP: $104.00
Easily Remove Security Tags with the Magnetic Remover Clothing Hard Tag Detacher - Effortlessly Remove Security Tags for Convenience and Peace of Mind
$48.95 Save $35.05 RRP: $84.00
2 Sets Magnetic Reed Switch NO NC Wired Surface Mounted Magnetic Contact Switch for Door Window
$28.95 Save $30.05 RRP: $59.00