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Under $20 Water & Flood Detectors

Shop the best prices on 1,465 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 Lihua Trading and more. Buy water & flood detectors online safely with Fruugo, with secure payment and fast shipping to New Zealand.

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65 - 96 of 1,465
12V Gas Alarm Sensor Alarm Propane Butane LPG Natural Motor Home Camper Edition 0827
$18.95 Save $33.00 RRP: $51.95
Tuya WIFI Water Sensor Alarm Water Leak Detector Flood Alert
$17.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Yvan
$11.95 Save $24.00 RRP: $35.95
Tuya WIFI Water Sensor Alarm Water Leak Detector Flood Alert
$13.95
2PCS PCFS-IR212-55 Floor Scrubber Water Level Sensor IP68 Water Detector High Precision Measurement-Good
$11.95 Save $24.00 RRP: $35.95
433MHz Wireless Vibration Alarm Sensor 71x36x15mm White Detector
$15.95 Save $4.00 RRP: $19.95
Portable Water Quality Tester for Electrolysis Monitoring
$19.95 Save $24.00 RRP: $43.95
Portable water quality tester with electrolysis and TDS detection
$21.95 Save $82.05 RRP: $104.00
1pc Plastic Water Flow Switch Vertical/Horizontal Water Sensor Magnetic AC 220V YEMAA
$13.95 Save $14.00 RRP: $27.95
2 m NTC thermistor temperature sensor waterproof probe wire 10 K 1% 3950 black
$11.95 Save $4.00 RRP: $15.95
Water Overflow Leakage Alarm Sensor Detector 90dB Water Level Alarm Leak Flood Detection Home Security Alarm System
$15.95 Save $8.00 RRP: $23.95
Smart Water Leak Detector with High Sensitivity for Home Use Plastic White Easy Installation Versatile 5.9 Inches
$19.95 Save $12.00 RRP: $31.95
Smart Water Leak Detector with High Sensitivity for Home Use White Plastic Reliable and Easy to Install
$19.95 Save $4.00 RRP: $23.95
Smart Water Leak Detector with High Sensitivity for Home Use Plastic White Reliable and Versatile 4.7 x 2.8 x 1.5 inches
$20.95 Save $5.00 RRP: $25.95
TuyaWiFi Smart Water Sensor Leak Detector Flood For home
$15.95
Wi-Fi Enabled Smart Sensor for Monitoring Indoor Climate in IoT Networks
$15.95 Save $29.00 RRP: $44.95
Universal Car Water Detector Oil Pressure Switch Sensor-Compatible with Multiple Models
$17.95 Save $36.05 RRP: $54.00
WiFi Water Level Alert System with App Remote Monitoring and Leak Detection Sensor for Smart Home Management
$16.95 Save $10.00 RRP: $26.95
Full Automatic Water Level Controller PCB Low Consumption Liquid Level Detection Sensor Module DC12V
$20.95 Save $38.05 RRP: $59.00
2025 Latest Model Water Level Alarm Water Leakage Detector Overflow Alarm Full
$20.95 Save $20.00 RRP: $40.95
2025 Latest Model Electrical Appliance Sensor Home Appliance Component Food
$20.95 Save $15.00 RRP: $35.95
2025 Latest Model Reliable Water Leak Water Leak Detectors Water Alarm
$20.95 Save $15.00 RRP: $35.95
Water Overflow Leakage Alarm Sensor Detector 90dB Water Level Alarm Leak Flood Detection Home Security Alarm System
$18.95
Wired Type Leakage Alarm Detector Water Sensor with 3.5mm Jack
$18.95
Water Level Sensor Module Water Level Alarm Droplet Sensor Water Rise Detection
$17.95 Save $3.00 RRP: $20.95
Tuya Zigbee Water Leak Sensor Wireless Flooding Detector Water Leakage Detection Alert Water Level Overflow Alarm
$14.95
Zigbee Water Immersion Sensor Smart Life Leakage Sensor Water Linkage Alarm App Remote Monitoring Water Leak Detector
$10.95
Tuya Wifi Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works
$9.95
Snzb-01p Zigbee Wireless Smart Scene Switch Diy Two-way Switch Sos Button Work With Alexa Ifttt Hub
$20.95
Tuya Smart Water Level Alarm Wifi Water Immersion Sensor Alarm Water Leak Detector App Remote Monitoring
$15.95
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$10.95
Overflow Water Immersion Alarm Detector Leak Alarm Water Level Overflow Detector Sensor Alarm
$13.95 Save $6.00 RRP: $19.95