Filters

Under $20 Water & Flood Detectors

Shop the best prices on 2,894 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.

Filters
1 - 32 of 2,894
Tuya ZigBee Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automati
$11.95 Save $10.00 RRP: $21.95
Tuya Smart WiFi Smoke Detector, Smart Controlled Sensor Real-Time Monitoring, Remote Alarm Notification
$12.95 Save $25.00 RRP: $37.95
Water Activated Flood Barrier For Home, Basement, And Garage | Creative, Durable And Reusable | Absorbent Flood Prevention Tool,Promotion
$18.95 Save $18.00 RRP: $36.95
ZigBee TUYA Smart Water Leak Detector, Flood Sensor, Remote Monitoring Via Tuya Zigbee Gateway, Wate
$11.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable Water Level Sensor Probe Dual Metal Pol
$16.95
Tuya Smart Vibration Sensor ZigBee Tuya Sensor Monitor App Control Security Protection Zigbee Sensor
$17.95 Save $29.00 RRP: $46.95
Water Sensor 90dB Alarm Water Leak Detector Alert Monitoring of Leaks and Drip Alarm for Kitchen Bat
$20.95 Save $18.00 RRP: $38.95
Reliable Sound Light Alarm System ABS Emergency Alert System Easy to Use for Effective Emergency Notifications Yellow
$16.95
Water Leakage Detection Alarm Rechargeable Ergro Water Pipes Fire Pipeline Automotive Detecti
$2.95 Save $2.00 RRP: $4.95
3-in-1 Tds Water Quality Tester High Accuracy Digital Water Testing Kit For Drink Water Water Tester Integrated
$12.95 Save $12.00 RRP: $24.95
Tuya Zigbee Water Level Sensor Smart Water Leakage Alarm Detector Overflow Security Protection Tuya
$16.95 Save $2.00 RRP: $18.95
Water Leakage Detector Sensor Water Level Sensor Probe 3 Meter Cable
$7.95
Adult Kids Posture Corrector With Smart Sensor Vibration Reminder
$18.95 Save $12.00 RRP: $30.95
Automatic Operation Water Leak Detector Water Alarm Sensor, Water Leakage Alarm
$4.95 Save $15.00 RRP: $19.95
Détecteur de fuite d'eau 120 dB, alarme de niveau de débordement, détection de pluie pour salle de bain, cuisine, sous-sol, garage
$19.95 Save $6.00 RRP: $25.95
Plastic Water Flow Switch Vertical/Horizontal Water Sensor Magnetic AC 220V Black
$18.95
3-in-1 Tds Water Quality Tester High Accuracy Digital Water Testing Kit For Drink Water Water Teste
$13.95 Save $13.00 RRP: $26.95
2X 2 m thermistor temperature sensor waterproof probe wire 10 K 1% 3950 black
$7.95 Save $4.00 RRP: $11.95
Wired Water Immersion Sensor Water Level Overflow Alarm Leak Detector Switch Probe for Home House Security Alarm System
$14.95 Save $5.00 RRP: $19.95
Tuya Smart Wifi Water Flood Sensor Water Leakage Detector Send Alert When Leak Is Detected Work Wit
$5.95 Save $6.00 RRP: $11.95
12V Gas Alarm Sensor Alarm Propane Butane LPG Natural Motor Home Camper
$19.95 Save $16.00 RRP: $35.95
Full Automatic Water Level Controller PCB Low Consumption Liquid Level Detection Sensor Module
$8.95 Save $11.00 RRP: $19.95
433MHz Wireless Water Leakage Sensor Water Leak Detector with Local Alarm Support for Home Security Water Level Overflow Intrusion Detection System
$19.95
Full Automatic Water Level Controller PCB Low Consumption Liquid Level Detection Sensor Module DC12V
$16.95 Save $16.00 RRP: $32.95
Water Leak Alarm Detector 120dB Loud Sensor for Home Sink Fish Tank Pump Overflow Leakage Alert System
$11.95 Save $6.00 RRP: $17.95
2pairs Smart Door Sensor, Wifi Window Door Sensor Alarm, Contact Sensor For Home Security, Smart Ho
$15.95
Infrared Beam Sensor for Gates, Doors & Window - External Alarm Detector
$15.95 Save $1.00 RRP: $16.95
Zigbee Smart Rain Sensor for Outdoor Wireless Rain Detection Waterproof, Zigbee Hub Required,Linkag
$19.95 Save $79.05 RRP: $99.00
4 Pcs Tds Meter Water Quality Tester Filter Pen Testing Water Quality For Drinking Water /swimming XXF f54
$20.95 Save $78.05 RRP: $99.00
120dB Ultra-Slim Vibration Alarm Sensor for Home Security, Window, Door, Bike
$20.95 Save $38.05 RRP: $59.00
ZigBee Flood Sensor Water Leakage Detector Water Tank Full Alert Overflow Security Alarm System App
$13.95 Save $40.05 RRP: $54.00
Water Leakage Spot Alarm Detector for Home Security and Flood Alert
$15.95 Save $36.00 RRP: $51.95