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Under $20 Water & Flood Detectors

Shop the best prices on 3,352 great value under $20 water & flood detectors. Shopping for water & flood detectors is easy with Fruugo, with SALE discounts, offers and savings on GreenZech, Shanghai Yangxin, Asiv and more. Buy water & flood detectors online safely with Fruugo, with secure payment and fast shipping to Singapore.

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1 - 32 of 3,200
Oil Leak Detection Set UV Dye Leak Detector Tool For Fluorescent Agent Syringemr
$21.95 Save $10.00 RRP: $31.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$8.95 Save $45.05 RRP: $54.00
Wired Type Leakage Alarm Detector Water Sensor with 3.5mm Jack
$11.95 Save $6.00 RRP: $17.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$8.95 Save $45.05 RRP: $54.00
Wireless Water Alarm Independent Battery Powered Water Alarm Sensor Detector 85dB Sounder Water
$4.95 Save $20.00 RRP: $24.95
High Decibel Sound Light Alarm 220V Adjustable Security Warning Device, Impact Resistant Siren for Home Shop Warehouse Safety
$11.95
Zigbee Smart Vibration Sensor Detection Tuya Smart Life APP Notification Real-Time Motion Vibration Alarm Smart Home
$15.95 Save $5.00 RRP: $20.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$8.95 Save $16.00 RRP: $24.95
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$5.95
Home Alarm Water Leak Sensor Leakage Detector Alert Overflow Security System
$14.95
Tuya WIFI Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automation unbrand
$20.95
Wireless Flood Alarm with 110DB Alert for Water Leak Detection in Basements and Homes
$21.95 Save $20.00 RRP: $41.95
Zigbee Smart Rain Sensor for Outdoor Wireless Rain Detection Waterproof, Zigbee Hub Required,Linkag
$19.95 Save $74.05 RRP: $94.00
Water Level Sensor Part For Washing Machine Automatic Water Level Line Washing Machine Part
$11.95 Save $47.05 RRP: $59.00
Water Leakage Alarm Detector 120db Water Leak Sensors Flood Alert Overflow TY
$12.95 Save $9.00 RRP: $21.95
ZigBee TUYA Smart Water Leak Detector, Flood Sensor, Remote Monitoring Via Tuya Zigbee Gateway, Wate
$13.95 Save $5.00 RRP: $18.95
Water Level Sensor Alarm for Fish Tank - Overflow Detection & Household Safety Alarm
$10.95 Save $12.00 RRP: $22.95
2025 Tuya Smart Water Level Alarm Wifi Water Immersion Sensor Alarm Water Leak Detector App Remote Monitoring
$19.95 Save $20.00 RRP: $39.95
Water Leak Alarm Detector 120dB Loud Home Sink Fish Tank Pump Overflow Leakage Sensor 2025
$15.95 Save $15.00 RRP: $30.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Yvan
$8.95 Save $16.00 RRP: $24.95
Tuya Wifi Temperature and Humidity Sensor Smart Life Remote Monitor Smart Home Indoor Hygrometer
$21.95 Save $9.00 RRP: $30.95
Fully Automatic Water Level Controller Switch 25A 220V Water Tank Liquid Level Detection Sensor Wate
$19.95 Save $16.00 RRP: $35.95
Tuya Smart WiFi Water Leak Sensor Flood Leakage Level Alarm Overflow Detector
$14.95
Smart Water Leakage Detector 120dB Overflow Flood Level Leaks Alarm for Home Kitchen Bathroom
$16.95 Save $9.00 RRP: $25.95
433MHz Water Leak Detector Wireless Intelligent Sensitive with Audio Alarm for Household
$18.95 Save $10.00 RRP: $28.95
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm
$13.95 Save $4.00 RRP: $17.95
Tuya Zigbee Smart Water Leak Sensor Water Overflow Level Detector
$16.95 Save $16.00 RRP: $32.95
Zigbee Flood Sensor Water Leakage Detector Water Tank Full Alert Overflow Security Alarm System Tuy
$15.95
Fuel Water Sensor 77366566 for Citroen Relay 2012 Onwards - Humidity Detection
$20.95 Save $38.05 RRP: $59.00
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm
$11.95 Save $4.00 RRP: $15.95
Tuya WiFi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System for Alexa Home
$15.95 Save $4.00 RRP: $19.95
Water Leak Sensor Flood and Rain Detector IPX7 Waterproof 3 Sensitivity Settings for Home Security Works
$20.95 Save $6.00 RRP: $26.95