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Under $20 Water & Flood Detectors

Shop the best prices on 2,807 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 2,807
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
2025 Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$15.95 Save $16.00 RRP: $31.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor
$16.95 Save $9.00 RRP: $25.95
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
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
10K Temperature Detector Probe for Air Conditioner NTC Thermistor Waterproof Rust Resistant Sensitive Reliable Detector Probe
$14.95 Save $9.00 RRP: $23.95
Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$6.95 Save $24.00 RRP: $30.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$16.95 Save $23.00 RRP: $39.95
Tuya Smart Life WiFi Switch Relay Temperature Humidity Monitoring Thermostat Sensor Passive Dry Con
$1.95 Save $1.00 RRP: $2.95
Wireless Intelligent Zigbee Water Immersion Sensor Leakage Sensor Leakage Detection Detector Water Level Alarm
$6.95
Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm Syste
$15.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable Water Level Sensor Probe Dual Metal Poles
$7.95
Full Automatic Water Level Controller PCB Low Consumption Liquid Level Detection Sensor Module DC5V
$12.95 Save $13.00 RRP: $25.95
NTC Thermistor Temperature Sensor M8 Thread Probe Cable Tube Clamp Type Line Length 150mm SM-2YV
$17.95
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
For Alexa Wifi Water Leakage Detection Alarm Detector Tuya Switch Water Leakage Sensor Voice Controller Google Home
$14.95 Save $8.00 RRP: $22.95
Water Sensor 90dB Alarm Water Leak Detector Alert Monitoring of Leaks and Drip Alarm for Kitchen Bathroom Basemen
$13.95 Save $7.00 RRP: $20.95
Tuya WiFi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System for Alexa Google Home
$16.95 Save $9.00 RRP: $25.95
Led Faucet Tip Replacement Rotating Spout Color Temperature Sensor
$2.95 Save $11.00 RRP: $13.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor
$16.95 Save $10.00 RRP: $26.95
433MHz Wired Overflow Leakage Sensor Water Level Leak Detector Home Security Alarm With Battery
$18.95 Save $11.00 RRP: $29.95
Natural gas leak alarm warning sensor detector home safety tool with indicator light
$21.95 Save $12.00 RRP: $33.95
Water Leakage Sensor Flood Leak Liquid Detector Probe Alarm for Home Farm Security
$12.95 Save $19.00 RRP: $31.95
TuyaWiFi Smart Water Sensor Leak Detector Flood For home
$16.95 Save $1.00 RRP: $17.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$10.95 Save $1.00 RRP: $11.95
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$18.95 Save $1.00 RRP: $19.95