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Under $20 Water & Flood Detectors

Shop the best prices on 1,438 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 Zhetong Trading Co., Ltd. and more. Buy water & flood detectors online safely with Fruugo, with secure payment and fast shipping to New Zealand.

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1 - 32 of 1,438
High Decibel Sound Light Alarm 220V Adjustable Security Warning Device, Impact Resistant Siren for Home Shop Warehouse Safety
$16.95
Tuya ZigBee Smart Rain Sensor 2-in-1 Rainwater Flood Detector Rainwater Detection for Home Automati
$16.95 Save $14.00 RRP: $30.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$11.95 Save $67.05 RRP: $79.00
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor
$19.95 Save $12.00 RRP: $31.95
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$11.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable Water Level Sensor Probe Dual Metal Pol
$7.95
Overflow Water Immersion Alarm Detector Leak Alarm Water Level Overflow Detector Sensor Alarm
$13.95 Save $6.00 RRP: $19.95
Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$17.95 Save $9.00 RRP: $26.95
P82D Water Alarm Battery Powered Water Water Detectors Leakage Alarm for Kitchen Bathroom & Water Dispenser
$15.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$12.95
Tuya WIFI Water Sensor Alarm Water Leak Detector Flood Alert
$17.95 Save $1.00 RRP: $18.95
Graffiti Zigbee Flood Sensor Water Sensor Multifunction Flood Sensor
$19.95 Save $1.00 RRP: $20.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$10.95 Save $1.00 RRP: $11.95
ZigBee TUYA Smart Water Leak Detector,Flood Sensor, Remote Monitoring
$20.95 Save $1.00 RRP: $21.95
Water Leakage Alarm Detector with Wired Sensor 1 Meter Cable
$10.95
TuyaWiFi Smart Water Sensor Leak Detector Flood For home
$20.95 Save $1.00 RRP: $21.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$11.95 Save $24.00 RRP: $35.95
Tuya Zigbee Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works
$16.95 Save $9.00 RRP: $25.95
Tuya Water Leakage Sensor Detector WiFi Flood Water Leak Sensor Home Protection Alarm System Smart Life APP Control
$19.95 Save $11.00 RRP: $30.95
Full Automatic Water Level Controller PCB Low Consumption Liquid Level Detection Sensor Module DC5V
$13.95 Save $8.00 RRP: $21.95
Household Water Leakage Alarm Detector High Sensitivity Waterproof Syhmy
$20.95 Save $23.00 RRP: $43.95
1/2/3Pcs Tuya Zigbee Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
$19.95 Save $12.00 RRP: $31.95
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$13.95
2 m NTC thermistor temperature sensor waterproof probe wire 10 K 1% 3950 black
$8.95
2PCS PCFS-IR212-55 Floor Scrubber Water Level Sensor IP68 Water Detector High Precision Measurement
$13.95 Save $4.00 RRP: $17.95
BERM K Type Thermocouple Sensors Probe Waterproof Anti Corrosion Probe Temperature Sensor 2 M / 6.6 Ft
$18.95 Save $18.00 RRP: $36.95
Water Leakage Alarm Sensor High Sensitivity for Zigbee 3.0 APP Monitoring Flood Detector for TUYA Smart
$20.95 Save $53.05 RRP: $74.00
119db Wireless Water Leak Detector Sensor With Floating Ball For Fish Tank Water Purifier
$17.95
Water Electrolyzer - Portable Water Quality Tester Lightweight Water Impurity Monitor Easy to Use Electrolyzer Test Monitor-Good
$11.95 Save $24.00 RRP: $35.95
Household Anti-Leak Alarm, Water Immersion Detector, Washing Machine Drainage Overflow Water Level Alarm
$19.95 Save $6.00 RRP: $25.95
Water Leak Alarm Detector 120dB Loud Home Sink Fish Tank Pump Overflow Leakage Sensor
$9.95 Save $44.05 RRP: $54.00
Water Level Sensor Module Water Level Alarm Droplet Sensor Water Rise Detection
$16.95 Save $12.00 RRP: $28.95