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Under $20 Water & Flood Detectors

Shop the best prices on 2,339 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 2,339
3-in-1 TDS Water Quality Tester High Accuracy Digital Water Testing Kit for Drink Water Water Tester
$14.95 Save $49.05 RRP: $64.00
Tuya ZigBee Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automati
$13.95 Save $11.00 RRP: $24.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$9.95 Save $54.05 RRP: $64.00
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
Graffiti Zigbee Flood Sensor Water Sensor Multifunction Flood Sensor
$19.95
Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$14.95 Save $7.00 RRP: $21.95
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
Tuya WIFI Water Sensor Alarm Water Leak Detector Flood Alert
$13.95 Save $1.00 RRP: $14.95
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 Save $1.00 RRP: $9.95
ZigBee TUYA Smart Water Leak Detector,Flood Sensor, Remote Monitoring
$16.95 Save $1.00 RRP: $17.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$8.95
TuyaWiFi Smart Water Sensor Leak Detector Flood For home
$16.95 Save $1.00 RRP: $17.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$10.95 Save $20.00 RRP: $30.95
Tuya Smart WIFI Water Flood Sensor Water Leakage Detector Send Alert When Leak is Detected Work with Alexa Google Home
$17.95 Save $9.00 RRP: $26.95
Tuya Zigbee Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works
$13.95 Save $7.00 RRP: $20.95
Tuya Water Leakage Sensor Detector WiFi Flood Water Leak Sensor Home Protection Alarm System Smart Life APP Control
$16.95 Save $8.00 RRP: $24.95
Full Automatic Water Level Controller PCB Low Consumption Liquid Level Detection Sensor Module DC5V
$11.95 Save $6.00 RRP: $17.95
1/2/3Pcs Tuya Zigbee Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
$15.95 Save $10.00 RRP: $25.95
2PCS PCFS-IR212-55 Floor Scrubber Water Level Sensor IP68 Water Detector High Precision Measurement
$10.95 Save $4.00 RRP: $14.95
3-in-1 TDS Water Quality Tester High Accuracy Digital Water Testing Kit for Drink Water Water Tester
$18.95 Save $10.00 RRP: $28.95
4xNTC Thermistor 10K 1% Temperature Sensor Waterproof 5x30mm Probe
$19.95 Save $7.00 RRP: $26.95
BERM K Type Thermocouple Sensors Probe Waterproof Anti Corrosion Probe Temperature Sensor 2 M / 6.6 Ft
$15.95 Save $15.00 RRP: $30.95
10X 2 M Thermistor Temperature Sensor Waterproof Probe Wire 10 K 1% 3950 Black
$18.95 Save $11.00 RRP: $29.95
Water Leakage Alarm Sensor High Sensitivity for Zigbee 3.0 APP Monitoring Flood Detector for TUYA Smart
$16.95 Save $42.05 RRP: $59.00
Home Alarm Water Leak Sensor Leakage Alert Overflow Security System
$18.95
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$10.95
Tuya Zigbee Water Level Sensor Smart Water Leakage Alarm Detector Overflow Security Protection Tuya unbrand
$18.95
Tuya WiFi Water Leakage Sensor Detector Home Alarm System Smart Life
$17.95