Air QualityAir ToolsAlarm SystemsAll Home SecurityAll Renewable EnergyBathroom PlumbingBrackets and Angle IronsCar Emergency SuppliesDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareElectrical ToolsElectronic Communication ComponentsEmergency SuppliesFastenersFire SafetyFlashlightsFurniture HardwareGarage Door Openers and HardwareGate HardwareGatesGuttering & DrainageHand ToolsHardware KnobsHome SafetyKitchen HardwareKitchen PlumbingLight BulbsMechanics ToolsPaint Supplies & ToolsPersonal PreparednessPipes, Fittings & AccessoriesPower Tool AccessoriesPower ToolsSolar AccessoriesSolar Charge ControllerSolderingStorm & Flood PrepSurveillanceThermostatsTool Equipment & StorageValves & Valve RepairWater HeatersWater Heaters, Pumps & TanksWildfire Prep
Sort by|
Air QualityAir ToolsAlarm SystemsAll Home SecurityAll Renewable EnergyBathroom PlumbingBrackets and Angle IronsCar Emergency SuppliesDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareElectrical ToolsElectronic Communication ComponentsEmergency SuppliesFastenersFire SafetyFlashlightsFurniture HardwareGarage Door Openers and HardwareGate HardwareGatesGuttering & DrainageHand ToolsHardware KnobsHome SafetyKitchen HardwareKitchen PlumbingLight BulbsMechanics ToolsPaint Supplies & ToolsPersonal PreparednessPipes, Fittings & AccessoriesPower Tool AccessoriesPower ToolsSolar AccessoriesSolar Charge ControllerSolderingStorm & Flood PrepSurveillanceThermostatsTool Equipment & StorageValves & Valve RepairWater HeatersWater Heaters, Pumps & TanksWildfire Prep
Water Sensor Switch(204)
Uses item details. Price when purchased online
Briidea LD-078 110dB, Switch Household Sensors & Alarms $69.99

Sponsored
$6999
current price $69.99Briidea LD-078 110dB, Switch Household Sensors & Alarms
24 out of 5 Stars. 2 reviews
Save with
GREENCYCLE Wireless Light Switch and Receiver Kit, Wireless Remote Light Switch, Wireless Wall Switch for Lights, Fans, Battery Included, No Wiring Needed, Buckle Design, Removable, Programmeable From $16.99

Sponsored
From$1699
GREENCYCLE Wireless Light Switch and Receiver Kit, Wireless Remote Light Switch, Wireless Wall Switch for Lights, Fans, Battery Included, No Wiring Needed, Buckle Design, Removable, Programmeable
254.6 out of 5 Stars. 25 reviews
Save with
Best seller TOPGREENER In-Wall PIR Motion Sensor Light Switch, Single Pole Occupancy Sensor Switch, Motion Sensor Switch, Need Neutral Wire, Wall Plate Included, On/Off Override, 4A, 500W, TSOS5-W, White, 2 Pack From $16.99

Sponsored
From$1699
TOPGREENER In-Wall PIR Motion Sensor Light Switch, Single Pole Occupancy Sensor Switch, Motion Sensor Switch, Need Neutral Wire, Wall Plate Included, On/Off Override, 4A, 500W, TSOS5-W, White, 2 Pack
424.6 out of 5 Stars. 42 reviews
Save with
Best seller TOPGREENER PIR Motion Sensor Light Switch, Occupancy & Vacancy Motion Sensor Switch, 𝐎𝐩𝐞𝐫𝐚𝐛𝐥𝐞 𝐖𝐢𝐭𝐡𝐨𝐮𝐭 𝐆𝐫𝐨𝐮𝐧𝐝 𝐖𝐢𝐫𝐞, No Neutral Wire, Single Pole, TDOS5-HL-W-2PCS, White From $20.99

Sponsored
From$2099
TOPGREENER PIR Motion Sensor Light Switch, Occupancy & Vacancy Motion Sensor Switch, 𝐎𝐩𝐞𝐫𝐚𝐛𝐥𝐞 𝐖𝐢𝐭𝐡𝐨𝐮𝐭 𝐆𝐫𝐨𝐮𝐧𝐝 𝐖𝐢𝐫𝐞, No Neutral Wire, Single Pole, TDOS5-HL-W-2PCS, White
174.1 out of 5 Stars. 17 reviews
Save with
SENRISE Side Mount Duckbill Float Switch Liquid Water Sensor Stainless Steel (withour mercury) From $10.72

4 options
Available in additional 4 optionsFrom$1072
SENRISE Side Mount Duckbill Float Switch Liquid Water Sensor Stainless Steel (withour mercury)
Best seller X-Sense Wi-Fi Water Sensor, Accessory for SWS54 Water Sensor Kit, SBS50 Base Station Required, Model SWS51, 1-Pack From $12.99

3 options
Available in additional 3 optionsFrom$1299
X-Sense Wi-Fi Water Sensor, Accessory for SWS54 Water Sensor Kit, SBS50 Base Station Required, Model SWS51, 1-Pack
1254.6 out of 5 Stars. 125 reviews
Save with
Water Flow Switch, Pump Sensor Stable G 3/4" -3/4" 1 PCS for Household Low Pressure $12.72

$1272
current price $12.72Water Flow Switch, Pump Sensor Stable G 3/4" -3/4" 1 PCS for Household Low Pressure
Topvico Water Alarms for Basements, Heater Leak Detector, Sump Pump Overflow Moisture Flood Sensor, 120dB Work Alone Battery Operated 3 packs From $8.95

5 options
Available in additional 5 optionsFrom$895
Topvico Water Alarms for Basements, Heater Leak Detector, Sump Pump Overflow Moisture Flood Sensor, 120dB Work Alone Battery Operated 3 packs
364.6 out of 5 Stars. 36 reviews
Save with
Unique Bargains Stainless Steel Tank Pool Water Level Sensor Vertical Float Switch 34cm Cable $16.87

$1687
current price $16.87Unique Bargains Stainless Steel Tank Pool Water Level Sensor Vertical Float Switch 34cm Cable
SENRISE Small Liquid Water Level Sensor Stainless Steel Ball Float Switch Tank Level Position Pool Pond $12.69

$1269
current price $12.69SENRISE Small Liquid Water Level Sensor Stainless Steel Ball Float Switch Tank Level Position Pool Pond
11 out of 5 Stars. 1 reviews
TOPGREENER Motion Sensor Switch, PIR Sensor Light Switch, Operable Without Ground Wire, No Neutral Wire Required, 150W Dimmable LED, TSOS5-KM-W-2PCS, White, 2 Pack From $32.39

Sponsored
From$3239
TOPGREENER Motion Sensor Switch, PIR Sensor Light Switch, Operable Without Ground Wire, No Neutral Wire Required, 150W Dimmable LED, TSOS5-KM-W-2PCS, White, 2 Pack
32.7 out of 5 Stars. 3 reviews
Save with
TOPGREENER Motion Sensor PIR Light Switch, Occupancy & Vacancy Modes, No Neutral Required, Operable Without Ground Wire, 1.25A, 150W Dimmable LED, Single Pole, TDOS5-KM-W, White 2-Pack From $29.99

Sponsored
From$2999
TOPGREENER Motion Sensor PIR Light Switch, Occupancy & Vacancy Modes, No Neutral Required, Operable Without Ground Wire, 1.25A, 150W Dimmable LED, Single Pole, TDOS5-KM-W, White 2-Pack
15 out of 5 Stars. 1 reviews
Save with
Water Level Sensor White PP Right Angle Float Switch $7.99

$799
current price $7.99Water Level Sensor White PP Right Angle Float Switch
Hi-Lo Sump Pump Switch, Ortis Electronic Adjustable Float Switch Controller with Stainless Steel Anti-Corrosion Dual Sensors, for Sewage Pits, Fish Tanks, Water Tanks, 220/110 VAC, Black $59.99

$5999
current price $59.99Hi-Lo Sump Pump Switch, Ortis Electronic Adjustable Float Switch Controller with Stainless Steel Anti-Corrosion Dual Sensors, for Sewage Pits, Fish Tanks, Water Tanks, 220/110 VAC, Black
15 out of 5 Stars. 1 reviews
Saniflo 050 Sanialarm $85.00

$8500
current price $85.00Saniflo 050 Sanialarm
12 out of 5 Stars. 1 reviews
1/2PT Liquid Water Level Sensor Horizontal Mounting Floating Switch 70W DC220V $16.08

$1608
current price $16.081/2PT Liquid Water Level Sensor Horizontal Mounting Floating Switch 70W DC220V
Unique Bargains 2 Pieces Water Level Monitor Sensor Right Angle Float Switches ZPC1 White $9.99

$999
current price $9.99Unique Bargains 2 Pieces Water Level Monitor Sensor Right Angle Float Switches ZPC1 White
SENRISE Vertical Stainless Steel Liquid Sensor Horizontal Float Switch 100/150/200/250mm Length From $7.88

From$788
SENRISE Vertical Stainless Steel Liquid Sensor Horizontal Float Switch 100/150/200/250mm Length
Water Leak Monitoring Sensor with Alarm 3 Pack - Leak Puppy Electronic Water & Flood Leak Detector - Detects as Little as 1/32" of Water - Overflow Alert Sensor Beeps Loudly When Water is Detected $31.96

$3196
current price $31.96Water Leak Monitoring Sensor with Alarm 3 Pack - Leak Puppy Electronic Water & Flood Leak Detector - Detects as Little as 1/32" of Water - Overflow Alert Sensor Beeps Loudly When Water is Detected
Save with
Vertical Stainless Steel Dual Ball Tank Liquid Water Level Sensor Float Switch $13.49

$1349
current price $13.49Vertical Stainless Steel Dual Ball Tank Liquid Water Level Sensor Float Switch
TOPGREENER PIR Motion Sensor Switch, Occupancy & Vacancy Modes, No Neutral Wire Required, Ground Wire Required, 5A, 360W LED/CFL, Single Pole, TDOS5 From $19.99

Sponsored
From$1999
TOPGREENER PIR Motion Sensor Switch, Occupancy & Vacancy Modes, No Neutral Wire Required, Ground Wire Required, 5A, 360W LED/CFL, Single Pole, TDOS5
43 out of 5 Stars. 4 reviews
Save with
TOPGREENER Humidity Sensor Switch for Ventilation Fan, Air Moisture Detection, Bathroom Automated Control, Adjustable Timing, Neutral Wire Required, White $21.49

Sponsored
$2149
current price $21.49TOPGREENER Humidity Sensor Switch for Ventilation Fan, Air Moisture Detection, Bathroom Automated Control, Adjustable Timing, Neutral Wire Required, White
23 out of 5 Stars. 2 reviews
Save with
Quaqdae Xh-M203 Full Automatic Water Level Controller Pump Switch Module 12V Relay Sensors $11.39 Was $22.77

Now$1139
current price Now $11.39, Was $22.77$22.77
Quaqdae Xh-M203 Full Automatic Water Level Controller Pump Switch Module 12V Relay Sensors
Professional Water Flow Sensor Switchs DN20 External Threaded Flow Sensor $22.12

$2212
current price $22.12Professional Water Flow Sensor Switchs DN20 External Threaded Flow Sensor
Telemecanique Sensors Water Pump Switch, 1/4in FNPS,30-50 psi 9013FSG2J21PC20 $46.19

$4619
current price $46.19Telemecanique Sensors Water Pump Switch, 1/4in FNPS,30-50 psi 9013FSG2J21PC20
Float Switch Fluid Water Level Sensing Switch Sensor 12V 24V 1Pc Black $13.48

$1348
current price $13.48Float Switch Fluid Water Level Sensing Switch Sensor 12V 24V 1Pc Black
Clearance Smart Water Leak Sensor - 3.15x1.18in WiFi Water Alarm for Home, Works with Smart Life App Alexa, Leak Detection for Basement Sink Water Heater Was $10.11

Smart Water Leak Sensor - 3.15x1.18in WiFi Water Alarm for Home, Works with Smart Life App Alexa, Leak Detection for Basement Sink Water Heater
Sump Alarm Water Level Float Switch,15ft,w/ Brckts $24.99

$2499
current price $24.99Sump Alarm Water Level Float Switch,15ft,w/ Brckts
13 out of 5 Stars. 1 reviews
Save with
Yammee Water Flow Switch Water Flow Control Switch Water Pump Adjustable Flow Sensor G1/2 to G1/2/G3/4 to G1/2 Thread Connector From $11.87
From$1187
Yammee Water Flow Switch Water Flow Control Switch Water Pump Adjustable Flow Sensor G1/2 to G1/2/G3/4 to G1/2 Thread Connector
25mm PP Tank Pool Water Level Liquid Sensor Vertical Float Switch New $7.35

$735
current price $7.3525mm PP Tank Pool Water Level Liquid Sensor Vertical Float Switch New
Rollback Occupancy Motion Sensor Light Switch, PIR Infrared Motion Activated Wall Switch, No Neutral Wire, Single Pole for CFL/LED/Incandescent Bulb, Wall Plate Included, UL Listed From $23.79

Sponsored
From$2379
Occupancy Motion Sensor Light Switch, PIR Infrared Motion Activated Wall Switch, No Neutral Wire, Single Pole for CFL/LED/Incandescent Bulb, Wall Plate Included, UL Listed
143.7 out of 5 Stars. 14 reviews
Save with
TOPGREENER Dual Tech Humidity Sensor Switch PIR Motion & Air Moisture Detection Bathroom Fan & Light Control NEUTRAL WIRE REQUIRED UL Listed TDHOS5 From $49.99

Sponsored
From$4999
TOPGREENER Dual Tech Humidity Sensor Switch PIR Motion & Air Moisture Detection Bathroom Fan & Light Control NEUTRAL WIRE REQUIRED UL Listed TDHOS5
14 out of 5 Stars. 1 reviews
Save with
MOBI Smart Home 2.4GHz WiFi Water Leak Sensor, Water Sensor, Water Detector Alarm; Water Leak & Flood Detector, Smart Notification App, Expand with Cameras & Smart Home Devices. Battery INCLUDED From $14.95

3 options
Available in additional 3 optionsFrom$1495
MOBI Smart Home 2.4GHz WiFi Water Leak Sensor, Water Sensor, Water Detector Alarm; Water Leak & Flood Detector, Smart Notification App, Expand with Cameras & Smart Home Devices. Battery INCLUDED
94.9 out of 5 Stars. 9 reviews
Save with
2pcs Water Liquid Level Sensor Vertical Float Switch 36mm ZP2508 $12.16

$1216
current price $12.162pcs Water Liquid Level Sensor Vertical Float Switch 36mm ZP2508
GLFILL Waterproof Float Switch Water Tank Liquid Fluid Water Level Controller Sensor From $26.03

2 options
Available in additional 2 optionsFrom$2603
GLFILL Waterproof Float Switch Water Tank Liquid Fluid Water Level Controller Sensor
Baoblaze Stainless Steel Float Switch Durable Float Sensor Switch for Water Pump Tank 100mm From $15.99

3 options
Available in additional 3 optionsFrom$1599
Baoblaze Stainless Steel Float Switch Durable Float Sensor Switch for Water Pump Tank 100mm
Smart WiFi Water Leak Detector - Wireless Sensor with App Alerts, Remote Monitoring for Home & Basement | Prevent Water Damage From $14.18

2 options
Available in additional 2 optionsFrom$1418
Smart WiFi Water Leak Detector - Wireless Sensor with App Alerts, Remote Monitoring for Home & Basement | Prevent Water Damage
Tuya ZigBee Water Level Sensor Leakage Alarm Flood Leak Detector Smart Home Water Alert Overflow Alarm Security System $13.50

$1350
current price $13.50Tuya ZigBee Water Level Sensor Leakage Alarm Flood Leak Detector Smart Home Water Alert Overflow Alarm Security System
Water Leak Detector Sensor Alarm: Home Water Flooding Monitor Smart Sink Overflow Monitoring Warning for Basement Floor $12.61 Was $14.10

Now$1261
current price Now $12.61, Was $14.10$14.10
Water Leak Detector Sensor Alarm: Home Water Flooding Monitor Smart Sink Overflow Monitoring Warning for Basement Floor
Smart Home Water Level Sensor WIFI Controller Leaka Flood Alarm Swimming Vape Tank Flow Detector System Leak Protection ,Easy to Operate $76.94

$7694
current price $76.94Smart Home Water Level Sensor WIFI Controller Leaka Flood Alarm Swimming Vape Tank Flow Detector System Leak Protection ,Easy to Operate
Winland Surface Water Sensor, Supervised (W-S-S) $39.00 Was $44.50

Now$3900
current price Now $39.00, Was $44.50$44.50
Winland Surface Water Sensor, Supervised (W-S-S)
High Performance 1/4" Water Flow Switch Plastic Water Flow Switch Water Flow Control Sensor for Water Purifier Dispenser $9.06

$906
current price $9.06High Performance 1/4" Water Flow Switch Plastic Water Flow Switch Water Flow Control Sensor for Water Purifier Dispenser
13 out of 5 Stars. 1 reviews
120W Pump Water Flow Sensor Switch 1/2 inch 3/4 inch Male Thread to Female Thread Automatic Water Booster Pump Sensor Switch From $35.65

2 options
Available in additional 2 optionsFrom$3565
120W Pump Water Flow Sensor Switch 1/2 inch 3/4 inch Male Thread to Female Thread Automatic Water Booster Pump Sensor Switch
Black & Decker Smart Wi-Fi Water Sensor $27.99

$2799
current price $27.99Black & Decker Smart Wi-Fi Water Sensor
Save with
tegongse Water Flow Switch with G3/4" Thread & Temperature Detection Liquid Flow Sensor Switch Quick Connection for Household $12.50

$1250
current price $12.50tegongse Water Flow Switch with G3/4" Thread & Temperature Detection Liquid Flow Sensor Switch Quick Connection for Household
Unique Bargains 3 Pieces Water Level Monitor Sensor Right Angle Float Switches ZPC1 White $12.19

$1219
current price $12.19Unique Bargains 3 Pieces Water Level Monitor Sensor Right Angle Float Switches ZPC1 White
Clearance Plastic Water Flow Switch Vertical/Horizontal Water Sensor Magnetic AC 220V $7.83 Was $18.00

Now$783
current price Now $7.83, Was $18.00$18.00
Plastic Water Flow Switch Vertical/Horizontal Water Sensor Magnetic AC 220V
KAIRUITE Horizontal Tank Liquid Float Switch Water Level Sensor Stainless Steel 50W 220V $10.35 Was $17.34

Now$1035
current price Now $10.35, Was $17.34$17.34
KAIRUITE Horizontal Tank Liquid Float Switch Water Level Sensor Stainless Steel 50W 220V
1L/Min Flow Sensor Switches Temperature Resistant Water Paddle Flows Switchs for Heat Pump Water Heater Air Conditioner $11.41

$1141
current price $11.411L/Min Flow Sensor Switches Temperature Resistant Water Paddle Flows Switchs for Heat Pump Water Heater Air Conditioner
WiFi Water Ieak Detector for Home 3 Pack, Smart Water Leak Sensor with 80dB Alarm and App Alerts, Water Sensor Alarm $19.56

$1956
current price $19.56WiFi Water Ieak Detector for Home 3 Pack, Smart Water Leak Sensor with 80dB Alarm and App Alerts, Water Sensor Alarm
Other options to consider(201)
Popular in Water Sensor Switch
- Hall Effect Switch
- Magnetic Water Flow Switch
- System Sensor Flow Switch
- Water Sensor With Shut Off Valve
- Ohm Temperature Sensor
- Pin Ir Sensor
- Combustible Gas Detectors
- Power Door Resistance Sensors
- Coolant Temperature Gauges
- HVAC Control Vacuum Check Valves
- Pool Alarms
- Air Conditioning (AC) Temperature Control Sensor and Bracket Assemblies
Related Products
Horizontal Water Level Sensor Liquid PP Float Switches NO NC 100V DC 0.5A
Horizontal Water Level Sensor Liquid PP Float Switches NO NC 100V DC 0.5A
G3/4\" Flow Sensor Water Flow Switch With Temperature Detection For Liquid Sensor Copper Shell Hall Flow Meters ,Accurate Measurement
G3/4\" Flow Sensor Water Flow Switch With Temperature Detection For Liquid Sensor Copper Shell Hall Flow Meters ,Accurate Measurement$30.17current price $30.17Thermal Conductive Water Flow Switches G1/2 G1/4 NPT1/4 Thread Flow Sensors Oil & Gas Pumps Electronic Flow Controller ,Good Performance
Thermal Conductive Water Flow Switches G1/2 G1/4 NPT1/4 Thread Flow Sensors Oil & Gas Pumps Electronic Flow Controller ,Good Performance$184.03current price $184.03Water Alarm- Leak Bug Flood Detector detects as Little as 1/32 Inch of Water- Electronic Overflow Alert Sensor Beeps When Battery is Low
Water Alarm- Leak Bug Flood Detector detects as Little as 1/32 Inch of Water- Electronic Overflow Alert Sensor Beeps When Battery is Low$14.36current price $14.36INTBUYING 4-20mA Smart Water Level Sensor Pressure Transducer Pressure Range 0-30M
INTBUYING 4-20mA Smart Water Level Sensor Pressure Transducer Pressure Range 0-30M$119.00current price $119.00Floor Water Sensor for Flood and Leak Detection (6 ft)
Floor Water Sensor for Flood and Leak Detection (6 ft)$14.99current price $14.99Gems Sensors Liquid Flow Switch,Rotor,SPDT,35mA/95mA RFS, 180395
Gems Sensors Liquid Flow Switch,Rotor,SPDT,35mA/95mA RFS, 180395$540.21current price $540.21First Alert TWLD3005-001 L2 WiFi Water Sensor And Switch Leak Detector
First Alert TWLD3005-001 L2 WiFi Water Sensor And Switch Leak Detector$104.85current price $104.85Bea Active Infrared Sensor for Request 10R2E-100
Bea Active Infrared Sensor for Request 10R2E-100$180.99current price $180.99Water Leak Monitoring Sensor with Alarm 3 Pack - Leak Puppy Electronic Water & Flood Leak Detector - Detects as Little as 1/32" of Water - Overflow Alert Sensor Beeps Loudly When Water is Detected
Water Leak Monitoring Sensor with Alarm 3 Pack - Leak Puppy Electronic Water & Flood Leak Detector - Detects as Little as 1/32" of Water - Overflow Alert Sensor Beeps Loudly When Water is Detected$31.96current price $31.96Water Leak Spot Alarm e For Water Detection System ASD16 Spot Detection Sensor Integrated Water Level Detection Sensor ,Easy to Use
Water Leak Spot Alarm e For Water Detection System ASD16 Spot Detection Sensor Integrated Water Level Detection Sensor ,Easy to Use$54.42current price $54.42IDENTER Water Leak Detector with Sensor Alarm, Power Insufficient Detection, Auto Shut-Off, Water-Saving, Home Assistant, Automation Improvement for Bathroom, Laundry, Basement, Kitchen
IDENTER Water Leak Detector with Sensor Alarm, Power Insufficient Detection, Auto Shut-Off, Water-Saving, Home Assistant, Automation Improvement for Bathroom, Laundry, Basement, Kitchen$33.99current price $33.99ZigBee TUYA Smart Water Leak Detector, Flood Sensor, Remote Monitoring Via Tuya Zigbee Gateway, Water Tank Full Alarm
ZigBee TUYA Smart Water Leak Detector, Flood Sensor, Remote Monitoring Via Tuya Zigbee Gateway, Water Tank Full Alarm$10.57current price $10.57YoLink Smart Water Leak Sensor, 1/4 mile Range White Smart Household Water Sensor 3 Pack
YoLink Smart Water Leak Sensor, 1/4 mile Range White Smart Household Water Sensor 3 Pack$49.99current price $49.99Schneider Electric Electronic Alarm,12/24VAC/DC,0.280AC,Blk XVS72BMBN
Schneider Electric Electronic Alarm,12/24VAC/DC,0.280AC,Blk XVS72BMBN$222.08current price $222.08Air Products & Controls Remote Alarm Accessory,4-1/2" L MS-RH/KA/P/A/T
Air Products & Controls Remote Alarm Accessory,4-1/2" L MS-RH/KA/P/A/T$103.82current price $103.82




