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Under $20 Water & Flood Detectors

Shop the best prices on 2,780 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 2,780
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor
$16.95 Save $9.00 RRP: $25.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$9.95 Save $54.05 RRP: $64.00
Wired Type Leakage Alarm Detector Water Sensor with 3.5mm Jack
$12.95 Save $7.00 RRP: $19.95
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
Wireless Water Alarm Independent Battery Powered Water Alarm Sensor Detector 85dB Sounder Water
$4.95 Save $24.00 RRP: $28.95
High Sensitive Leak Detector Loud Water Leak Alarm without Battery for Basement Apartment Kitchen Bathroom (White)
$17.95 Save $56.05 RRP: $74.00
High Decibel Sound Light Alarm 220V Adjustable Security Warning Device, Impact Resistant Siren for Home Shop Warehouse Safety
$12.95
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
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
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$6.95
3-in-1 Tds Water Quality Tester High Accuracy Digital Water Testing Kit For Drink Water Water Tester Integrated
$3.95 Save $36.00 RRP: $39.95
Water Level Sensor Part For Washing Machine Automatic Water Level Line Washing Machine Part
$13.95 Save $55.05 RRP: $69.00
Water Leakage Alarm Detector 120db Water Leak Sensors Flood Alert Overflow TY
$14.95 Save $11.00 RRP: $25.95
Water Level Sensor Alarm for Fish Tank - Overflow Detection & Household Safety Alarm
$11.95 Save $15.00 RRP: $26.95
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm
$12.95 Save $6.00 RRP: $18.95
Tuya Zigbee Water Leak Sensor Wireless Flooding Detector Water Leakage Detection Alert Water Level Overflow Alarm
$20.95 Save $10.00 RRP: $30.95
Water Leak Alarm Detector 120dB Loud Home Sink Fish Tank Pump Overflow Leakage Sensor 2025
$17.95 Save $18.00 RRP: $35.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Yvan
$9.95 Save $19.00 RRP: $28.95
Smart Water Leakage Detector 120dB Overflow Flood Level Leaks Alarm for Home Kitchen Bathroom
$19.95 Save $11.00 RRP: $30.95
433MHz Water Leak Detector Wireless Intelligent Sensitive with Audio Alarm for Household
$21.95 Save $13.00 RRP: $34.95
Fully Automatic Water Level Controller Switch 25A 220V Water Tank Liquid Level Detection Sensor Wate
$18.95 Save $3.00 RRP: $21.95
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm
$14.95 Save $5.00 RRP: $19.95
Zigbee Flood Sensor Water Leakage Detector Water Tank Full Alert Overflow Security Alarm System Tuy
$17.95
Tuya WiFi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System for Alexa Home
$17.95 Save $5.00 RRP: $22.95
Ice Machine Water Level Float Sensor Water Level Control Switch Float Switch Water Temperature Detector
$11.95
2PCS PCFS-IR212-55 Floor Scrubber Water Level Sensor IP68 Water Detector High Precision Measurement-Good
$9.95 Save $19.00 RRP: $28.95
2pcs Water Level Switch Sensor Controller for Automatic Water Tank Pumping DIY Kit
$19.95
1.5inch Universal Swimming Pool Water Overflow Outlet Floor Drain Replacement-White unbrand
$15.95 Save $24.00 RRP: $39.95
Tuya WIFI Water Sensor Water Leakage Detector 90db High Pitch Alarm for Kitchen Bathroom Basemen
$18.95 Save $10.00 RRP: $28.95
Fish for Tank Water Level Alarm High Water Level Sensor Water Detectors with Probe and Sucker for Aquarium Home Water fo
$20.95
Water Quality Tester Probe High Accuracy TDS Tester Meter Monitor Electrode Probe for Aquarium Hydroponics Swimming Pool Black
$17.95
Smart Zigbee Temperature and Humidity Detector Sensor APP Real Time Monitoring LCD Screen Diaplay W
$15.95