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Under $20 Water & Flood Detectors

Shop the best prices on 1,200 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. Buy water & flood detectors online safely with Fruugo, with secure payment and fast shipping to New Zealand.

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1 - 32 of 1,200
Wired Type Leakage Alarm Detector Water Sensor with 3.5mm Jack
$14.95 Save $7.00 RRP: $21.95
Zigbee Smart Vibration Sensor Detection Tuya Smart Life APP Notification Real-Time Motion Vibration Alarm Smart Home
$21.95 Save $7.00 RRP: $28.95
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$7.95
2025 Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$18.95 Save $19.00 RRP: $37.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$11.95 Save $62.05 RRP: $74.00
Water Leak Detector Multi-Functional Sound Detector for Pipe Water Leak Suitable for Leak Detection of Various Pipe
$19.95 Save $9.00 RRP: $28.95
Wireless Water Alarm Independent Battery Powered Water Alarm Sensor Detector 85dB Sounder Water
$5.95 Save $29.00 RRP: $34.95
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
$20.95 Save $11.00 RRP: $31.95
High Sensitive Leak Detector Loud Water Leak Alarm without Battery for Basement Apartment Kitchen Bathroom (White)
$21.95 Save $67.05 RRP: $89.00
Water Leak Alarm Liquid Leakage Detector Sound Alarm Sensor Home Security
$8.95 Save $8.00 RRP: $16.95
Water Overflow Sensor Detector 120dB Water Leakage Alarm System
$7.95 Save $7.00 RRP: $14.95
DF-96DK Automatic Water Level Controller Switch 20A 220V Tank Liquid Detection Sensor C
$16.95 Save $82.05 RRP: $99.00
3-in-1 TDS Water Quality Tester High Accuracy Digital Water Testing Kit for Drink Water Water Tester
$17.95 Save $3.00 RRP: $20.95
Tuya WiFi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System for Alexa Google Home
$21.95 Save $11.00 RRP: $32.95
Flood Water Barrier Sand Bags Thickened Long Canvas Flood Protection Sandbags with Insert Buckle Reusable Quick Flood Barrier for Home Door Window Bas
$17.95
Professional Car Air Conditioner Leak Detector Dye 2.5ml UV Dye Fluorescent Dye Certified AC Leak Detector
$19.95
Fully Automatic Water Level Controller Switch 25A 220V Water Tank Liquid Level Detection Sensor Wat
$15.95 Save $7.00 RRP: $22.95
Tuya Z2M Water Immersion Sensor Zigbee3.0 Flood Water Leak Detector Alarm Security Water Leak Sensor
$17.95 Save $10.00 RRP: $27.95
5Pcs Water Leakage Detector Sensor with 3.5 Audio Head Water Level Sensor Probe Dual Metal Poles Water Leak Level Sensor
$15.95 Save $9.00 RRP: $24.95
Digital Test Pencil Voltage Detector 12-1000V with Sound & Light Alarm
$20.95 Save $8.00 RRP: $28.95
Ice Machine Water Level Float Sensor Water Level Control Switch Float Switch Water Temperature Detec
$20.95 Save $9.00 RRP: $29.95
Plastic Water Flow Switch Vertical/Horizontal Water Sensor Magnetic AC 220V
$15.95 Save $34.00 RRP: $49.95
Water Leakage Alarm Detector With Wired Sensor 1 Meter Cable Water Level Sensor Probe Dual Metal Pol unbrand
$16.95 Save $11.00 RRP: $27.95
Zigbee Smart Vibration Sensor Detection Tuya Smart Life App Notification Real-time Motion Vibration
$19.95
Home Alarm Water Leakage Spot Alarm Detector Flood Security Alarm
$13.95
Tuya Z2M Water Immersion Sensor Zigbee3.0 Flood Water Leak Detector
$20.95
Water Overflow Leakage Alarm Sensor Detector 90dB Water Level Alarm Leak Flood Detection Home Security Alarm System
$19.95
Tuya Smart WIFI Water Flood Sensor Water Leakage Detector Send Alert When Leak is Detected Work with Alexa Google Home
$22.95
Water Level Alarm Water Leakage Detector 120 DB Security Alarm System
$19.95
Tuya Water Leakage Sensor Detector WiFi Flood Water Leak Sensor Home Protection Alarm System Smart Life APP Control
$20.95 Save $12.00 RRP: $32.95
Tuya WIFI Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works
$18.95 Save $10.00 RRP: $28.95
5Pcs Water Leakage Detector Sensor with 3.5 Audio Head Water Level Sensor Probe Dual Metal Poles Water Leak Level Sensor
$15.95 Save $7.00 RRP: $22.95