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Under $20 Water & Flood Detectors

Shop the best prices on 2,554 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, Elsavct 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 2,554
Tuya Smart WiFi Smoke Detector, Smart Controlled Sensor Real-Time Monitoring, Remote Alarm Notification
$22.95 Save $2.00 RRP: $24.95
Home Alarm Water Leak Sensor Leakage Detector Alert Overflow Security System
$14.95
WiFi Smart Temperature and Humidity Switch with 1M Sensor 16A Temperature Humidity Switch Supports
$20.95 Save $38.05 RRP: $59.00
Zigbee Smart Vibration Sensor Detection Tuya Smart Life APP Notification Real-Time Motion Vibration Alarm Smart Home
$15.95 Save $5.00 RRP: $20.95
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$5.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$7.95 Save $46.05 RRP: $54.00
2025 Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$13.95 Save $14.00 RRP: $27.95
High Sensitive Leak Detector Loud Water Leak Alarm without Battery for Basement Apartment Kitchen Bathroom (White)
$15.95 Save $48.05 RRP: $64.00
Wireless Water Alarm Independent Battery Powered Water Alarm Sensor Detector 85dB Sounder Water
$4.95 Save $21.00 RRP: $25.95
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
$14.95 Save $8.00 RRP: $22.95
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$8.95
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
$17.95 Save $19.00 RRP: $36.95
Plastic Water Flow Switch G1/4 Thread Water Sensor Normally Open Water Switch Fits for Water Dispenser Water Purifier
$19.95
Water Alarm Leak Detector,Wireless Tank Level Monitor with 100db Sound Light Alarm,App Alert & Monitor-Water Leak Sensor
$20.95 Save $12.00 RRP: $32.95
Tuya Zigbee Water Leak Sensor Wireless Flooding Detector Water Leakage Detection Alert Water Level Overflow Alarm
$20.95 Save $12.00 RRP: $32.95
Water Leakage Sensor WIFI Leak Level Sound Alarm Detector Security Overflow Protection Tuya Smart Life App Control
$18.95 Save $11.00 RRP: $29.95
P82D Water Alarm Battery Powered Water Water Detectors Leakage Alarm for Kitchen Bathroom & Water Dispenser
$10.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$8.95 Save $1.00 RRP: $9.95
Graffiti Zigbee Flood Sensor Water Sensor Multifunction Flood Sensor
$13.95 Save $1.00 RRP: $14.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$7.95
1/2/3Pcs Tuya Zigbee Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
$13.95 Save $8.00 RRP: $21.95
Tuya Zigbee Water Level Sensor Smart Water Leakage Alarm Detector Overflow Security Protection Tuya unbrand
$15.95
Water Sensor,WiFi Water Detector Alarm Leak Detector, for Home with 100dB Adjustable Alarm and App Alerts
$16.95
Leak Stop Valve for Reverse Osmosis Under Sink Filter, Auto Shut Off Water Leak Detector, 3 Point
$20.95 Save $11.00 RRP: $31.95
Pool and Spa Test Strips 5 in 1 Water Quality Tester - 100 Pcs
$20.95 Save $38.05 RRP: $59.00
5-in-1 Water Quality Tester C-100 Multifunctional Salinity TDS EC Seawater Test Pen Water Quality Tester Detector
$20.95 Save $38.05 RRP: $59.00
Smoke Cone Leak Detector Exhaust Air Intake Duct Adapter Leak Detection Car Smoke Machine Accessories
$19.95
Fully Automatic Water Level Controller Switch 25A 220V Water Tank Liquid Level Detection Sensor Water Pump Controller A
$19.95
Capteur d'alarme de fuite d'eau de sécurité 120 dB Système d'alarme de niveau d'eau
$17.95 Save $6.00 RRP: $23.95
Tuya WiFi Water Leak Sensor Flood Leakage Detector with Sound Alarm 80dB IP55 WaterProof Water Sensor Remote Monitor
$19.95
Water Overflow Leakage Alarm Sensor Detector 90dB Water Level Alarm Leak Flood Detection Home Security Alarm System
$14.95
Water Detector Alarm, Smart Water Sensor , 100dB Water Detector Alarm with App Remote , for Basement,Kitchen,Bathroom
$21.95 Save $2.00 RRP: $23.95