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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
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
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
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$9.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable Water Level Sensor Probe Dual Metal Pol
$6.95
Fictory Water Sensor Fictory Hall Sensor Water Switch Meter, DC 3.5-24V, 0.3-10L/Min, 25 cm Length, 180 Degree G3/8 Connection
$20.95 Save $21.00 RRP: $41.95
Sound Light Alarm 24V Model 103 High Decibel 110dB Flashing
$15.95 Save $8.00 RRP: $23.95
110dB Water Level Alarm Detector for Home Kitchen Bathroom Basement
$18.95 Save $12.00 RRP: $30.95
Liquid Water Leak Sensor Alarm 100dB Loud Buzzer for Home Boat Shop Garage Basement Warehouse
$14.95 Save $4.00 RRP: $18.95
Graffiti Zigbee Flood Sensor Water Sensor Multifunction Flood Sensor
$18.95
Tuya Smart Zigbee Rain Sensor IP65 Waterproof Rain Detection Water Leak Sensor Real Time APP Monitoring Alert B
$19.95 Save $9.00 RRP: $28.95
Tuya WiFi Water Leak Sensor Flood Leakage Detector with Sound Alarm 80dB IP55 WaterProof Water Sensor Remote Monitor
$20.95 Save $10.00 RRP: $30.95
Tuya WIFI Water Sensor Water Leakage Detector 90db High Pitch Alarm for Kitchen Bathroom Basemen
$18.95 Save $10.00 RRP: $28.95
Tuya ZigBee Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automation
$18.95 Save $9.00 RRP: $27.95
Overflow Water Immersion Alarm Detector Leak Alarm Water Level Overflow Detector Sensor Alarm
$10.95 Save $5.00 RRP: $15.95
P82D Water Alarm Battery Powered Water Water Detectors Leakage Alarm for Kitchen Bathroom & Water Dispenser
$12.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$9.95 Save $1.00 RRP: $10.95
Graffiti Zigbee Flood Sensor Water Sensor Multifunction Flood Sensor
$15.95 Save $1.00 RRP: $16.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$8.95
2 m NTC thermistor temperature sensor waterproof probe wire 10 K 1% 3950 black
$14.95 Save $6.00 RRP: $20.95
Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$14.95 Save $7.00 RRP: $21.95
5pcs Wired Water Leak Sensor Kitchen Sink Water Leak Alarm With 1m Long Cable-YKY416
$14.95 Save $7.00 RRP: $21.95
Transparent Waterproof Glue Plus Brush For Bathroom Water Pipe
$10.95 Save $18.00 RRP: $28.95
Transparent Waterproof Glue Plus Brush For Bathroom Water Pipe
$10.95 Save $18.00 RRP: $28.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$9.95 Save $20.00 RRP: $29.95