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Under $20 Water & Flood Detectors

Shop the best prices on 2,233 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 and Viewleaf. Buy water & flood detectors online safely with Fruugo, with secure payment and fast shipping to Singapore.

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1 - 32 of 2,233
Tuya Smart WiFi Smoke Detector, Smart Controlled Sensor Real-Time Monitoring, Remote Alarm Notification
$22.95 Save $2.00 RRP: $24.95
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
2025 Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$13.95 Save $14.00 RRP: $27.95
Temperature Sensor Induction Cooker Temperature Detector Electric Cooker Temperature Sensor
$7.95 Save $46.05 RRP: $54.00
Home Alarm Water Leak Sensor Leakage Detector Alert Overflow Security System
$14.95
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
WiFi Smart Temperature and Humidity Switch with 1M Sensor 16A Temperature Humidity Switch Supports
$20.95 Save $38.05 RRP: $59.00
Tuya Wifi Smart Water Sensor Leak Detector Flood Water Leakage Alarm Security System For Alexa Home
$5.95
Float Level Sensor Pool Water Level Switch water level float sensor switch for tank Swimming Pool Garden Aquarium working
$16.95 Save $16.00 RRP: $32.95
90 dB Household Wireless Water Leak Detector Sensor Water Leakage Alarm for Home Kitchen Toilet
$21.95 Save $7.00 RRP: $28.95
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
120dB Water Leakege Sensor Overflow Level Alarm Rain Detection for Bathroom Kitchen Basement Garage
$17.95 Save $5.00 RRP: $22.95
Reliable Sound Light Alarm System ABS Emergency Alert System Easy to Use for Effective Emergency Notifications Yellow
$16.95
Tuya Smart Zigbee Rain Sensor IP65 Waterproof Rain Detection Water Leak Sensor Real Time APP Monitoring Alert B
$19.95 Save $11.00 RRP: $30.95
Zigbee Water Leak Detector for EWelink Zigbee Water Detector APP Remote Control Water Sensor for Kitchens Basements
$11.95 Save $11.00 RRP: $22.95
2Pcs Tuya WiFi Smart Water Leak Sensor Remote Monitoring Water Overflow Level Detector 80dB Sound Alarm System
$20.95 Save $19.00 RRP: $39.95
Graffiti Zigbee Flood Sensor Smart Water Sensor Leakage Alarm Flood Sensor Multifunction Flood Sensor unbrand
$21.95 Save $11.00 RRP: $32.95
Tuya Water Leakage Sensor 433MHz Security Flood Detector Flood Sensor Wireless Detector Smart Home Security Alarm
$14.95 Save $16.00 RRP: $30.95
Tuya WiFi Smart Water Leak Sensor 90dB Leak Alarm Dual-Sided Water Level Sensor Remote Monitor Smart Home
$18.95 Save $19.00 RRP: $37.95
Tuya Water Leakage Sensor Detector WiFi Flood Water Leak Sensor Home Protection Alarm System Smart Life APP Control
$13.95 Save $13.00 RRP: $26.95
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
Automatic Operation Water Leak Detector Water Alarm Sensor, Water Leakage Alarm
$4.95 Save $15.00 RRP: $19.95
Smartlife App Wifi Water Sensor Water Leak Detector Alarm Home Control Ip67 Works With Tuyasmart /
$4.95 Save $7.00 RRP: $11.95
Tuya WiFi Smart Water Leak Detector Water Overflow Flood Leakage Sensor Remote Monitor Security Sound Alarm System
$11.95
Plastic Water Flow Switch Vertical/Horizontal Water Sensor Magnetic AC 220V Black
$18.95
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