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Shop the best prices on 9,781 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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65 - 96 of 9,781
PVC D Profile Window Door Seal, 6M Strong Adhesive Weatherproof Noise Insulation Strip for Doors & Windows (Black)
$16.95 Save $9.00 RRP: $25.95
Adjustable Freezer Door Alarm with 4-in-1 Sensor, Wireless Fridge Alarm for Safety, 3-60 Sec Delay, Door Open Chime
$27.95 Save $31.05 RRP: $59.00
Bluetooth Multifunction Gateway Smart Home Door and Window Sensor Socket Control Center
$54.00
1/2pcs 4 In 1 Door Alarm Security Alarm 3/15/30/60 Seconds Wireless Magnetic Doorbell Sensor Alarm
$30.95
Smart WIFI Door Window Sensor, Security Magnetic Sensor Close Detector, Alexa and Google Home Compat
$41.95 Save $32.05 RRP: $74.00
2.4GHz Wireless TTLOCK Door Sensor
$26.95
Magnetic Remover Clothing Hard Tag Remove/security Tag Detacher Tw-dwdz
$12.95 Save $7.00 RRP: $19.95
Infrared Beam Detector 2pcs Automatic Burglar Alarm Sensor
$12.95 Save $38.00 RRP: $50.95
Magnetic Door Window Contact Sensor Alarm Reed Switch Security Burglar Alarm f54
$13.95 Save $70.05 RRP: $84.00
Magnetic Door Window Contact Sensor Alarm Reed Switch Security Burglar Alarm
$14.95 Save $32.00 RRP: $46.95
Infrared Sensor Variable Frequency 4 Beam IR Barrier Fence Detector Human Body Sensing Safety Grating 8‑33VDC 20m/787.4in
$139.00 Save $120.00 RRP: $259.00
1 Pair Home Security Single Beam Infrared Detector Anti-theft Counterfire Alarm Infrared Sensor
$20.95 Save $33.05 RRP: $54.00
Vibration Sensor for Real-Time Monitoring Security Alarm Sensor
$38.95 Save $15.05 RRP: $54.00
2025 Door Opening Sensor Wireless Time Delay Door Alarm Door Sensor Door And Window Security Alarm Home
$28.95 Save $30.05 RRP: $59.00
2025 2Pcs IR Beam Detector Burglar Alarm System with Light Sensor for Doors
$74.00 Save $75.00 RRP: $149.00
2025 Intelligent Home Light Sensor Upgrades with Instant Monitoring Threaded Light Detection Sensors for Indoor Lighting Control
$32.95 Save $31.05 RRP: $64.00
2025 Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Sensor Alarm White- (10 Sets)
$9.95 Save $9.00 RRP: $18.95
2025 2pack Freezer Door Alarm,3/15/30/60 Seconds Wireless Fridge Alarm,4 In 1 Door Sensor Doorbell Door Open Alarm Loud108db
$33.95 Save $35.05 RRP: $69.00
2025 Wireless Home Doors Windows Security Entry Alarm System Pack 6
$25.95 Save $28.05 RRP: $54.00
2025 Ring Alarm Riser 1/4 inch 5 Pack Mount for Entryways
$27.95 Save $26.05 RRP: $54.00
2pcs Personal Security Window & Door Alarm Bell,wireless Sensor Door Window Burglar Alarm
$26.95 Save $27.05 RRP: $54.00
Adhesive Patches for Libre Libre Sensor Covers Waterproof & Sweatproof & Durable 50-piece/set Skin-Friendly for Sensor Blue
$37.95
Bestseller Door and window sensors 5 pcs. Recessed Wired Door Window Sensor Door Window Alarm Sensor Home Security Alarm System
$36.95 Save $27.05 RRP: $64.00
Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Sensor Alarm White- (10 Sets)
$22.95 Save $21.00 RRP: $43.95
Wireless Sensor Dolphinbar(Wiimote to PC USB )Connect
$69.00 Save $5.00 RRP: $74.00
Safety Sensor Replacement Kit Garage Door Lift Garage Sensor Bracket
$20.95 Save $2.00 RRP: $22.95
Infrared Wireless GSM Alarm Anti-Theft Motion Detector with EU Plug
$27.95 Save $2.00 RRP: $29.95
Temperature and Humidity Sensor Graffiti ZigBee Intelligent Sensor
$32.95 Save $2.00 RRP: $34.95
Burglar Alarm for Doors and Window 120dB High Decibel Salarm Sensor
$8.95 Save $1.00 RRP: $9.95
2Pcs Tuya Smart Temperature Humidity Sensor Zigbee
$29.95 Save $2.00 RRP: $31.95
w Pack Freezer Door Alarm, Window Security Alarm, 3/15/30/60 Seconds Wireless
$199.00
for 117 25700071 Magnetic Switch
$139.00 Save $10.00 RRP: $149.00