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Under $20 Water & Flood Detectors

Shop the best prices on 2,840 great value under $20 water & flood detectors. Shopping for water & flood detectors is easy with Fruugo, with SALE discounts, offers and savings on Shanghai Yangxin, Asiv, Guangzhou Aidai Trading Co., Ltd and more. Buy water & flood detectors online safely with Fruugo, with secure payment and fast shipping to Australia.

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1 - 32 of 2,840
High Sensitive Leak Detector Loud Water Leak Alarm without Battery for Basement Apartment Kitchen Bathroom (White)
$17.95 Save $56.05 RRP: $74.00
Wireless Water Alarm Independent Battery Powered Water Alarm Sensor Detector 85dB Sounder Water
$4.95 Save $24.00 RRP: $28.95
Wifi Gas Leak Detector And Fire Alarm Lcd Display Wall Mounted App Control Smart Wi-fi Natural Gas/ Lpg Tester Methane Alarm Buzzler With Sound Ligh unbrand
$17.95 Save $9.00 RRP: $26.95
High Decibel Sound Light Alarm 220V Adjustable Security Warning Device, Impact Resistant Siren for Home Shop Warehouse Safety
$12.95
Wired Type Leakage Alarm Detector Water Sensor with 3.5mm Jack
$12.95 Save $5.00 RRP: $17.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$9.95 Save $19.00 RRP: $28.95
Zigbee Smart Vibration Sensor Detection Tuya Smart Life APP Notification Real-Time Motion Vibration Alarm Smart Home
$17.95 Save $6.00 RRP: $23.95
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$6.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor
$16.95 Save $9.00 RRP: $25.95
2025 Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$15.95 Save $16.00 RRP: $31.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$9.95 Save $54.05 RRP: $64.00
Float Level Sensor Pool Water Level Switch water level float sensor switch for tank Swimming Pool Garden Aquarium working
$18.95 Save $18.00 RRP: $36.95
Water Activated Flood Barrier For Home, Basement, And Garage | Creative, Durable And Reusable | Absorbent Flood Prevention Tool,Promotion
$20.95 Save $21.00 RRP: $41.95
Tuya Smart Vibration Sensor ZigBee Tuya Sensor Monitor App Control Security Protection Zigbee Sensor
$20.95 Save $33.05 RRP: $54.00
Water Sensor High Sensitive Leak Detector for Basement Use
$19.95 Save $15.00 RRP: $34.95
120dB Water Leakege Sensor Overflow Level Alarm Rain Detection for Bathroom Kitchen Basement Garage
$19.95 Save $6.00 RRP: $25.95
Reliable Sound Light Alarm System ABS Emergency Alert System Easy to Use for Effective Emergency Notifications Yellow
$18.95
3-in-1 TDS Water Quality Tester High Accuracy Digital Water Testing Kit for Drink Water Water Tester
$5.95 Save $11.00 RRP: $16.95
Universal Motorcycle Water Temperature Sensor for Various Models and Brands
$20.95 Save $27.00 RRP: $47.95
Tuya Smart Zigbee Rain Sensor IP65 Waterproof Rain Detection Water Leak Sensor Real Time APP Monitoring Alert B
$21.95 Save $13.00 RRP: $34.95
Transparent Waterproof Glue Plus Brush For Bathroom Water Pipe
$10.95 Save $6.00 RRP: $16.95
Water Leakage Detection Alarm Rechargeable Ergro Water Pipes Fire Pipeline Automotive Detecti
$2.95 Save $2.00 RRP: $4.95
3-in-1 Tds Water Quality Tester High Accuracy Digital Water Testing Kit For Drink Water Water Tester Integrated
$14.95 Save $14.00 RRP: $28.95
Tuya Zigbee Water Level Sensor Smart Water Leakage Alarm Detector Overflow Security Protection Tuya
$18.95 Save $2.00 RRP: $20.95
Water Leakage Detector Sensor Water Level Sensor Probe 3 Meter Cable
$8.95
Adult Kids Posture Corrector With Smart Sensor Vibration Reminder
$20.95 Save $14.00 RRP: $34.95
Automatic Operation Water Leak Detector Water Alarm Sensor, Water Leakage Alarm
$4.95 Save $17.00 RRP: $21.95
Tuya ZigBee Smart Water Sensor Water Leak Detector Alarm APP Remote Control Water Leak Sensor Water
$15.95 Save $3.00 RRP: $18.95
Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$5.95 Save $7.00 RRP: $12.95
Tuya WiFi Smart Water Leak Detector Water Overflow Flood Leakage Sensor Remote Monitor Security Sound Alarm System
$13.95
Accurate Pool & Spa Water Quality Tester, Quick & Easy Chlorine, Bromine, pH, Hardness, Alkalinity, Cyanuric Acid Strips, 50 PCS for Swimming Pool &
$14.95 Save $6.00 RRP: $20.95
Smart WIFI Water Leak Detector 100dB High-Decibel Alarm Remote Real-Time Control Wireless Stereo Sensor for Kitchens
$21.95