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Shop the best prices on 3,423 great value security system sensors. Shopping for security system sensors is easy with Fruugo, with SALE discounts, offers and savings on GreenZech, Other, Ebox and more. Buy security system sensors online safely with Fruugo, with secure payment and fast shipping to Canada.

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33 - 64 of 3,423
2 Sets Magnetic Reed Switch NO NC Wired Surface Mounted Magnetic Contact Switch for Door Window
$16.95 Save $9.00 RRP: $25.95
2 Sets Magnetic Door Switch Wired NC NO Normally Open Closed Door Contact Switch for Home Security 100V DC
$17.95 Save $10.00 RRP: $27.95
Wireless Outdoor Door Window Magnetic Alarm Sensor Waterproof Monitor Burglar Anti Theft Alarm Home Security
$28.95 Save $14.00 RRP: $42.95
Door Alarm Sensor 120db Loud Wireless Door Alarm Hanging Contact Sensor Black Alarm
$14.95 Save $12.00 RRP: $26.95
High Sensitive Vibration Detector Earthquake Alarms with LED Lighting Door Home Wireless Electric Car Alarm
$18.95 Save $9.00 RRP: $27.95
Ultrasonic Ranging Alarm Kits LED Display Design of Reverse Alarm DIY Kit Ultrasonic Sensor Module f
$14.95 Save $9.00 RRP: $23.95
Garage Door Bracket for Ring Alarms Contact Sensors(2nd Gen), Easy-to-Install Garage Door Safety Acc
$10.95 Save $2.00 RRP: $12.95
6 Pcs Remote Door Alarm Door Sensor Chime Door Magnets Alarm Window Alarms Sensors Burglar Alert Security Door Sensor
$32.95 Save $11.00 RRP: $43.95
90db Wireless Security Alarm Door Window Sensor Magnetic Opening Sensor Enhanced 10Pcs
$18.95
Door Alarm, Wireless Door Window Contact Sensor For Kids Safety(4 Pcs, White)
$79.00
Temperature Humidity Sensor Intelligent Linkage Wireless for TUYA ZigBee Audio Control for Google Home
$24.95 Save $7.00 RRP: $31.95
LED Indicator Smart 120db Automatic Power Cut Failure Outage Alarm Warning Siren
$19.95 Save $5.00 RRP: $24.95
2pcs Magnetic Reed Switch Normally Open Closed Magnetic Contact Switch for Door Wall
$15.95 Save $5.00 RRP: $20.95
Wireless Infrared Gate Beam Sensor Anti Theft Alarm IP55 Waterproof for Station Automatic Door
$44.95 Save $14.05 RRP: $59.00
Infrared Beam Sensor Intrusion Alarm Outdoor Long Distance Infrared Detector AC1218V DC1224V 60m/196.9ft
$64.00 Save $20.00 RRP: $84.00
Infrared Beam Sensor Weatherproof Photocell for Gate Opener DC/AC 12V24V Outdoor Safety
$51.95 Save $27.05 RRP: $79.00
3X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
$8.95 Save $5.00 RRP: $13.95
Magnetic Reed Switch Alarm Sensor Set for Doors & , Recessed Design, Easy Installation, Compatible with Security Alarm Systems, Compact & Practical,
$24.95 Save $16.00 RRP: $40.95
Camera Detector Portable Compact Secrecy Protection Smart Wireless Signal Detector with Indicator for Tracking Device T16
$31.95 Save $9.00 RRP: $40.95
Inductive Cylindrical LongRange Proximity Sensor With Wire Cable Detection Distance
$64.00 Save $35.00 RRP: $99.00
Capteur de détection de faisceau infrarouge/IR pour système de sécurité extérieur de protection périmétrique
$23.95 Save $7.00 RRP: $30.95
Doorstop Security-Alarm for Home Travel Wireless Vibration Sensor Home Securitys Alarm Burglar With Button
$13.95 Save $9.00 RRP: $22.95
Ultrasonic Ranging Alarm Kits LED Display Design of Reverse Alarm DIY Kit Ultrasonic Sensor Module f
$16.95 Save $12.00 RRP: $28.95
Door Window Contact Sensor - Works With Siren, Alarm Host, Wireless Doorbell Receiver Hy
$30.95 Save $3.00 RRP: $33.95
Tuya ZigBee Door Window Sensor Anti-Theft Alarm Smart Home Wireless Detector APP Remote Work with H
$14.95
Smart Home Wifi Door Sensor App Notification Window Detector Security Protection Alert Security Alarm GreenZech
$34.95 Save $64.05 RRP: $99.00
Wireless Door and Window Sensor Alarm with ZigBee Compatibility and Tamper Alerts
$42.95
Wireless Window Door Sensor, Magnetic Contact Switch, AC220V 2500W, Ideal for Extractor Hoods and Home Security EU Plug
$20.95 Save $18.00 RRP: $38.95
Water Leak Sensor Alarm Buzzer
$54.00
Smart WiFi Door Window Open/Closed Sensor Detectors Voice Control for Google Home for Tuya
$19.95 Save $11.00 RRP: $30.95
Door Window Sensor Alarm Security 700 Series Usb Charge Battery Operated 868.4mhz GreenZech
$79.00 Save $150.00 RRP: $229.00
Tuya Zigbee Smart Light Sensor Light Brightness Sensor
$19.95