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Under $20 Water & Flood Detectors

Shop the best prices on 2,898 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 2,898
Tuya Smart WiFi Smoke Detector, Smart Controlled Sensor Real-Time Monitoring, Remote Alarm Notification
$12.95 Save $25.00 RRP: $37.95
Tuya ZigBee Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automati
$11.95 Save $10.00 RRP: $21.95
5Pcs Water Leakage Detector Sensor with 3.5 Audio Head Water Level Sensor Probe Dual Metal Poles Water Leak Level Sensor unbrand
$13.95
Tuya Z2M Water Immersion Sensor Zigbee3.0 Flood Water Leak Detector Alarm Security Water Leak Sensor unbrand
$12.95
Tuya WiFi Water Leak Sensor Flood Leakage Detector with Sound Alarm 80dB IP55 WaterProof Water Sensor Remote Monitor unbrand
$18.95
Tuya WIFI Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automation unbrand
$19.95
Tuya Zigbee Water Level Sensor Smart Water Leakage Alarm Detector Overflow Security Protection SmartThings Tuya EWeLink unbrand
$16.95
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm unbrand
$11.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$8.95 Save $17.00 RRP: $25.95
Zigbee Smart Rain Sensor for Outdoor Wireless Rain Detection Waterproof, Zigbee Hub Required,Linkag
$19.95 Save $79.05 RRP: $99.00
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 $10.00 RRP: $22.95
ZigBee TUYA Smart Water Leak Detector, Flood Sensor, Remote Monitoring Via Tuya Zigbee Gateway, Wate
$13.95 Save $4.00 RRP: $17.95
Water Level Sensor Alarm for Fish Tank - Overflow Detection & Household Safety Alarm
$10.95 Save $12.00 RRP: $22.95
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
Wired Water Leakage Alarm Detector with 3.5mm Jack Sensor
$19.95 Save $18.00 RRP: $37.95
Tuya Smart WiFi Water Leak Sensor Flood Leakage Level Alarm Overflow Detector
$14.95
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm
$13.95 Save $3.00 RRP: $16.95
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
Water Leak Alarm Detector 120dB Loud Home Sink Fish Tank Pump Overflow Leakage Sensor
$15.95 Save $9.00 RRP: $24.95
Smart Water Leakage Detector 120dB Overflow Flood Level Leaks Alarm for Home Kitchen Bathroom
$16.95 Save $10.00 RRP: $26.95
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
$14.95 Save $5.00 RRP: $19.95
Water Leak Sensor Flood and Rain Detector IPX7 Waterproof 3 Sensitivity Settings for Home Security Works
$19.95 Save $6.00 RRP: $25.95
Ice Machine Water Level Float Sensor Water Level Control Switch Float Switch Water Temperature Detector
$10.95
2PCS PCFS-IR212-55 Floor Scrubber Water Level Sensor IP68 Water Detector High Precision Measurement-Good
$8.95 Save $17.00 RRP: $25.95
2pcs Water Level Switch Sensor Controller for Automatic Water Tank Pumping DIY Kit
$16.95
1.5inch Universal Swimming Pool Water Overflow Outlet Floor Drain Replacement-White unbrand
$13.95 Save $21.00 RRP: $34.95
Water Leak Sensor Water Leak Detector Probe for Home Use Single Piece White Plastic
$17.95 Save $18.00 RRP: $35.95