Refurbished Water Detectors & Alarms — 29 Deals

29 open-box and refurbished Water Detectors & Alarms deals are live for shoppers in the US right now, with discounts averaging 24% off retail. Prices range from $7 to $883, and every listing shows the seller's condition grade, current price, savings versus list price and stock status — so you can compare before you buy. Top brands on sale include Moen, X-Sense, Flood Buzz and FREEZE2TRIM. Inventory syncs from Amazon and other partner stores throughout the day; open-box stock is usually one-of-a-kind, so the best deals sell out fast.

29 live US listings.

USA

Moen

Moen Flo 3/4-inch Smart Water Shut Off Valve, Smart Home Water Monitor Leak Detector, Wifi Connected, App Enabled Flow Meter and Shutoff, 900-001

$415⁰⁹

Moen Flo 1-1/4-inch Smart Water Shut Off Valve, Smart Home Water Monitor Leak Detector, Wifi Connected, App Enabled Flow Meter and Shutoff, 900-002

$882²⁸

Watts A2C-SC Series Intelliflow 1/2" Washing Machine Smart Water Shutoff Valve with Leak Sensor, Inlet Adapters, Without Wall Box, Automated Flood Detection with Real-Time Text and E-Mail Alerts

Used – Acceptable

$237¹²

$341.10

-31% Save $103.98

Update: 21 hours 48 mins

Buy at Amazon.com

USA

Moen

Moen Flo 1-inch Smart Water Shut Off Valve, Smart Home Water Monitor Leak Detector, Wifi Connected, App Enabled Flow Meter and Shutoff, 900-006

Used – VeryGood

$514⁰³

$608.00

-16% Save $93.97

Update: 23 hours 47 mins

Buy at Amazon.com

USA

Phyn

Plus Smart Water Assistant & Shutoff (2nd Gen)

$512²⁵

LUCKYDUO WiFi Sump Pump Alarm, Built-in Backup Battery, High/Low

$43⁴⁴

Zoeller 771302 APak Control Enabled Indoor Alarm System with Reed Sensor

$98⁸²

SJE-Rhombus Tank Alert XT - Indoor/Outdoor Tank Alarm with Auto Reset

$167¹⁹

Pool Preserver Advanced Wi-Fi Alert System: Bridge Gateway, Pool Sensor, Indoor Outdoor Temp. and Humidity, Indoor Pool Temperature Display with Ambient Temp. and Humidity

$90¹⁹

FloodStop Water Heater Motorized Ball Valve, 3/4" Compression

$93⁵¹

X-Sense Wi-Fi Water Leak Detector for Home - Smart 2-in-1 Leak & Low-Temperature Sensor with App Alerts, Protection for Homes, Kitchens & Basements, Model SWS0B, 3 Packs

$22⁷³

TACO LB-075-H-2LF LeakBreaker 3/4"" NPT Water Heater Shut-Off Valve & Actuator

$149³⁹

Moen White Flo Smart Water Leak Detector, Water Sensor Alarm for Home, 3-Pack, 920-005

Used – Mint

$116⁶⁷

$139.98

-17% Save $23.31

Update: 23 hours 28 mins

Buy at Amazon.com

USA

Risinglink

Risinglink WiFi Water Leak Detector with 6.5 ft Sensing Cable, Whole-Area Leak Detection, Text Message, Email & Audible Alerts, Battery Powered

$64⁵⁹

HydroCheck Water Sensor Alarm, Smart Water Leak Detector for Home & Basements | Made in THE USA | Automatic Flood Detectors and Water Alarm, Pure Water Capable (WaterWatcher)

Used

$80⁴⁴

$99.99

-20% Save $19.55

Update: 20 hours 22 mins

Buy at Amazon.com

USA

Moen

Moen Flo Smart Water Leak Detector, Drip or Flood Sensor Alarm for Home, 1-Pack, White, 920-004

Used – Mint

$38⁹⁶

$54.87

-29% Save $15.91

Update: 23 hours 28 mins

Buy at Amazon.com

USA

Honeywell Home

Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White

$19⁷⁹

X-Sense Wi-Fi Water Leak Detector for Home - Smart 2-in-1 Leak & Low-Temperature Sensor with App Alerts, Protection for Homes, Kitchens & Basements, Model SWS0B, 1 Pack

$7²⁶

Flood Buzz Small Water Leak Detectors for Homes & Businesses - 12-Pack

$69⁸⁸

Baldr Smart Water Leak Detector Wireless Wi-Fi Water Sensor for Home with Real-time Email/APP Alerts, 100dB Local Alarm, Suitable for Kitchen, Basement, 3 Sensors

$7⁹⁶

Resideo RCHW3610WF1001/N Wi-Fi Water Leak Detector, 1.2, White

$99⁹⁵

MOKYDUO Z2PRO WiFi Sump Pump Alarm, Backup Battery, High/Low, 90dB

$83⁶³

Drip Defender Pro Water Sensor | Wi-Fi Water Leak Detector for Home with 100dB Alarm, High Sensitivity, IP66 Waterproof, Easy Installation, Smart Moisture Alarm for Kitchens, Basements, and Bathrooms

Used – Mint

$10⁸⁷

$17.19

-37% Save $6.32

Update: 3 hours 35 mins

Buy at Amazon.com

USA

RUIKORING

5 Pack Water Leak Alarm Detector, 120dB Loud Alert Water Sensor, IP66 Waterproof, Sensitive Leak and Drip Alert, Easy Installation for Home, Basement Flood Prevention, Bathroom, Sink, Laundry

Used – VeryGood

$29⁹⁹

$35.99

-17% Save $6.00

Update: 2 hours 45 mins

Buy at Amazon.com

Water Detectors & Alarms open-box FAQ

How much can I save on open-box Water Detectors & Alarms?

Discounts on Water Detectors & Alarms at OpenBoxFox currently average 24% off retail across 29 live listings, with prices from $7 to $883. Savings are measured against the manufacturer's list price.

Are open-box and refurbished Water Detectors & Alarms safe to buy?

Yes — every listing shows the seller's condition grade (from open-box "Like New" to certified refurbished) before you buy. You purchase directly from the seller, such as Amazon, and that seller's standard return policy applies to your order.

Which Water Detectors & Alarms brands are on sale open-box right now?

The most-listed brands in Water Detectors & Alarms at the moment are Moen, X-Sense, Flood Buzz, FREEZE2TRIM and FloodStop. New open-box inventory arrives daily, so brand availability changes often.

How often are Water Detectors & Alarms deals updated?

OpenBoxFox syncs Water Detectors & Alarms inventory from partner stores throughout the day. Sold-out listings are removed automatically and new deals appear shortly after we find them.