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Safety Equipment and GearAir QualityAir ToolsAlarm SystemsAll Home SecurityAll Renewable EnergyBathroom PlumbingBrackets and Angle IronsBreakers, Distributors, and Load CentersDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareElectrical ToolsElectrical Wire & CableElectronic Communication ComponentsFastenersFire SafetyFurniture HardwareGate HardwareGatesGuttering & DrainageHand ToolsHardware KnobsHome SafetyKitchen HardwareKitchen PlumbingLight BulbsMechanics ToolsPaint Supplies & ToolsPersonal PreparednessPipes, Fittings & AccessoriesPower Tool AccessoriesPower ToolsProjectsSafety DetectorsSolar AccessoriesSolar Charge ControllerSolderingThermostatsToilets and BidetsTool Equipment & StorageValves & Valve RepairWater HeatersWater Heaters, Pumps & TanksWildfire Prep
Water Sensor Switch(301)
Uses item details. Price when purchased online
FOUR E's Scientific Sump Alarm, High Water Alarm for Sump Pump & Septic Water, Weatherproof 110dB Audible Alarm with Float Switch for Indoor Use $37.98
Sponsored
$3798
current price $37.98FOUR E's Scientific Sump Alarm, High Water Alarm for Sump Pump & Septic Water, Weatherproof 110dB Audible Alarm with Float Switch for Indoor Use
Saniflo 050 Sanialarm $72.99 Was $85.00
Sponsored
Now$7299
current price Now $72.99, Was $85.00$85.00
Saniflo 050 Sanialarm
12 out of 5 Stars. 1 reviews
Sump Pump Alarm, Briidea Indoor/Outdoor High Water Septic Tank Alarm with 110dB Loud Alarm and Large LED Indicator, 10ft Level Float Switch, Ideal for Septic Sump Pump Pond Water Tank $69.99 Was $79.99
Sponsored
Now$6999
current price Now $69.99, Was $79.99$79.99
Sump Pump Alarm, Briidea Indoor/Outdoor High Water Septic Tank Alarm with 110dB Loud Alarm and Large LED Indicator, 10ft Level Float Switch, Ideal for Septic Sump Pump Pond Water Tank
24 out of 5 Stars. 2 reviews
Zuomeng High Water Alarm for Sump Pump, Flashing Light & 110 dB Alarm, IP67 Casing, Connects to Submersible Pump $69.99
Sponsored
$6999
current price $69.99Zuomeng High Water Alarm for Sump Pump, Flashing Light & 110 dB Alarm, IP67 Casing, Connects to Submersible Pump
M Buder Duckbill Float Switch 304 Stainless Steel Water Liquid Level Sensor Controller G1/2" DC0-220V (4.3 in / 108 mm) $17.73
$1773
current price $17.73M Buder Duckbill Float Switch 304 Stainless Steel Water Liquid Level Sensor Controller G1/2" DC0-220V (4.3 in / 108 mm)
M Buder Liquid Water Level Float Sensor Switch Side-Mounted 304 Stainless Steel 1/2NPT Male Thread DC0-110V Water Level Controller for Dispensers, Heaters, Solar Energy, Humidifiers $15.63
$1563
current price $15.63M Buder Liquid Water Level Float Sensor Switch Side-Mounted 304 Stainless Steel 1/2NPT Male Thread DC0-110V Water Level Controller for Dispensers, Heaters, Solar Energy, Humidifiers
Rupoun Automatic Water Level Controller Relay Output Liquid Sensor Switch Module 9-12V, 10A Output Capacity for Home Water Tank Pump, 3.94 inches / 10.00 cm $9.82
$982
current price $9.82Rupoun Automatic Water Level Controller Relay Output Liquid Sensor Switch Module 9-12V, 10A Output Capacity for Home Water Tank Pump, 3.94 inches / 10.00 cm
YAHHU 5pcs PP Plastic Liquid Level Float Switch P3508 Water Tank Pool Sensor Controller (15.75 inches / 40 cm Wire) $12.61
$1261
current price $12.61YAHHU 5pcs PP Plastic Liquid Level Float Switch P3508 Water Tank Pool Sensor Controller (15.75 inches / 40 cm Wire)
M Buder 1.5m Premium Liquid Float Switch Water Level Controller, Highly Accurate Automatic Water Tank Pump Sensor Switch (4.9 Feet / 1.5 m) From $19.15
2 options
Available in additional 2 optionsFrom$1915
M Buder 1.5m Premium Liquid Float Switch Water Level Controller, Highly Accurate Automatic Water Tank Pump Sensor Switch (4.9 Feet / 1.5 m)
YAHHU Double Ball Float Switch 4.72 inches / 120mm Stainless Steel Liquid Water Level Sensor Controller with 15.75 inches / 400mm Wire 0-220V Wide Voltage Application Heavy Duty Industrial $17.12
$1712
current price $17.12YAHHU Double Ball Float Switch 4.72 inches / 120mm Stainless Steel Liquid Water Level Sensor Controller with 15.75 inches / 400mm Wire 0-220V Wide Voltage Application Heavy Duty Industrial
Briidea Septic Sump Pump Alarm, 110dB Siren, LED Indicator, 10ft Float Switch, Indoor/Outdoor, with Test Button & AC Light $89.99
Sponsored
$8999
current price $89.99Briidea Septic Sump Pump Alarm, 110dB Siren, LED Indicator, 10ft Float Switch, Indoor/Outdoor, with Test Button & AC Light
15 out of 5 Stars. 1 reviews
Reduced price Shelly 1PM Gen3 $19.24 Was $27.49
Sponsored
Now$1924
current price Now $19.24, Was $27.49$27.49
Shelly 1PM Gen3
74.7 out of 5 Stars. 7 reviews
M Buder Non Contact Liquid Level Controller Sensitivity Adjustable Automatic Water Level Controller Switch Sensor AC100-260V for Smart Pump Level Control (4.53 x 3.54 x 1.57 inches / 11.5 x 9 x 4 cm) $43.86
$4386
current price $43.86M Buder Non Contact Liquid Level Controller Sensitivity Adjustable Automatic Water Level Controller Switch Sensor AC100-260V for Smart Pump Level Control (4.53 x 3.54 x 1.57 inches / 11.5 x 9 x 4 cm)
Suodoka 2Pcs Water Level Sensor Switch White PP Plastic Liquid Float Switch 1/2in / 1.27cm Thread NPT DC0-110V $9.55
$955
current price $9.55Suodoka 2Pcs Water Level Sensor Switch White PP Plastic Liquid Float Switch 1/2in / 1.27cm Thread NPT DC0-110V
Riousery Water Level Sensor Switch 304 Stainless Steel Liquid Float Controller AC 0-220V (9.06 inches / 23 cm) $14.27
$1427
current price $14.27Riousery Water Level Sensor Switch 304 Stainless Steel Liquid Float Controller AC 0-220V (9.06 inches / 23 cm)
X-Sense Wi-Fi Water Sensor, Accessory for SWS54 Water Sensor Kit, SBS50 Base Station Required, Model SWS51, 1-Pack From $15.99
3 options
Available in additional 3 optionsFrom$1599
X-Sense Wi-Fi Water Sensor, Accessory for SWS54 Water Sensor Kit, SBS50 Base Station Required, Model SWS51, 1-Pack
1714.7 out of 5 Stars. 171 reviews
Uxcell 55mm Aquarium Tank Water Level Sensor White PP Right Angle Float Switch $8.09
$809
current price $8.09Uxcell 55mm Aquarium Tank Water Level Sensor White PP Right Angle Float Switch
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
Suodoka 2Pcs Water Flow Sensor Switch Plastic Gravity Type FS G1/2in Double Male Thread 2.36 inches / 6 cm Length $12.13
$1213
current price $12.13Suodoka 2Pcs Water Flow Sensor Switch Plastic Gravity Type FS G1/2in Double Male Thread 2.36 inches / 6 cm Length
Water Flow Sensor 1" Stainless Steel Water Flow Hall Sensor Switch DC3.524V $16.47
$1647
current price $16.47Water Flow Sensor 1" Stainless Steel Water Flow Hall Sensor Switch DC3.524V
Shelly 1PM Gen3 x2 $29.74
Sponsored
$2974
current price $29.74Shelly 1PM Gen3 x2
25 out of 5 Stars. 2 reviews
GREENCYCLE Wireless Light Switch and Receiver Kit, Mini Remote Control Switch,Wireless Swtich Set for Ceiling Lights,Lamps,Lighting Fixture, No Wiring No WiFi Needed,Outdoor 1300ft Indoor 200ft Range From $16.99
Sponsored
From$1699
GREENCYCLE Wireless Light Switch and Receiver Kit, Mini Remote Control Switch,Wireless Swtich Set for Ceiling Lights,Lamps,Lighting Fixture, No Wiring No WiFi Needed,Outdoor 1300ft Indoor 200ft Range
274.6 out of 5 Stars. 27 reviews
Sump Alarm High Water Alarm with 10ft float switch for sump pumps From $129.99
4 options
Available in additional 4 optionsFrom$12999
Sump Alarm High Water Alarm with 10ft float switch for sump pumps
15 out of 5 Stars. 1 reviews
Water Flow Sensor Switch with 1/2-inch / 1.27 cm Interface Electromagnetic Flowmeter, Rated Power 10W - Industrial Flow Switch Accessory $18.98
$1898
current price $18.98Water Flow Sensor Switch with 1/2-inch / 1.27 cm Interface Electromagnetic Flowmeter, Rated Power 10W - Industrial Flow Switch Accessory
MOMOJIA Water Pump Adjustable Flow Sensor Electronic Pressure Automatic Flow Control From $10.69
From$1069
MOMOJIA Water Pump Adjustable Flow Sensor Electronic Pressure Automatic Flow Control
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
Saniflo 050 Sanialarm $72.99 Was $85.00
Now$7299
current price Now $72.99, Was $85.00$85.00
Saniflo 050 Sanialarm
12 out of 5 Stars. 1 reviews
Flow Switch for Salt Chlorine Generator Systems, Sensor with 15-Foot Cable for Reliable Water Flow Rate Monitoring $18.99
$1899
current price $18.99Flow Switch for Salt Chlorine Generator Systems, Sensor with 15-Foot Cable for Reliable Water Flow Rate Monitoring
Nieyigj Cable Float Switch Water Liquid Drainage Level Controller Sensor for Tank Pump, 250V 16A, 4m / 13.1ft Cord, IP68 Waterproof Electrical Switch for Sump Pumps and Pools $24.89
$2489
current price $24.89Nieyigj Cable Float Switch Water Liquid Drainage Level Controller Sensor for Tank Pump, 250V 16A, 4m / 13.1ft Cord, IP68 Waterproof Electrical Switch for Sump Pumps and Pools
1/4" NPT Water Flow Switch Practical PE Tube Liquid Flow Sensor Switch for Home $10.89
$1089
current price $10.891/4" NPT Water Flow Switch Practical PE Tube Liquid Flow Sensor Switch for Home
Ortis Humidity Sensor Switch, in-Wall Bathroom Fan Automated Control Switch, Separate Sensor for Better Moisture Detection, 328ft Range, 110/220V, Keep Your Room Dry From $25.99
Sponsored
From$2599
Ortis Humidity Sensor Switch, in-Wall Bathroom Fan Automated Control Switch, Separate Sensor for Better Moisture Detection, 328ft Range, 110/220V, Keep Your Room Dry
15 out of 5 Stars. 1 reviews
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 $25.19
Sponsored
From$2519
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
203.9 out of 5 Stars. 20 reviews
Vertical Stainless Steel Dual Ball Tank Liquid Water Level Sensor Float Switch $13.59
$1359
current price $13.59Vertical Stainless Steel Dual Ball Tank Liquid Water Level Sensor Float Switch
Nieyigj Duckbill Float Switch 304 Stainless Steel Water Liquid Level Sensor G1/2" DC0-220V 4.3 inches / 108 mm[cite: 1] $17.60
![Nieyigj Duckbill Float Switch 304 Stainless Steel Water Liquid Level Sensor G1/2" DC0-220V 4.3 inches / 108 mm[cite: 1]](https://i5.walmartimages.com/seo/Nieyigj-Duckbill-Float-Switch-304-Stainless-Steel-Water-Liquid-Level-Sensor-G1-2-DC0-220V-4-3-inches-108-mm-cite-1_54a7a8be-92e3-4255-bb1a-1f963cab4af6.fb1737ef10a1d25ddb48305c8255c5f1.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$1760
current price $17.60Nieyigj Duckbill Float Switch 304 Stainless Steel Water Liquid Level Sensor G1/2" DC0-220V 4.3 inches / 108 mm[cite: 1]
Sump Alarm Water Level Float Switch,15ft,w/ Brckts $24.99
$2499
current price $24.99Sump Alarm Water Level Float Switch,15ft,w/ Brckts
33 out of 5 Stars. 3 reviews
Water Pump Sensor Switch Pressure Automatic Control Switch HT-60 4-4 220V 60W G1/2in $14.76
$1476
current price $14.76Water Pump Sensor Switch Pressure Automatic Control Switch HT-60 4-4 220V 60W G1/2in
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
NIAIZEK Vertical Float Switch for Water Purifiers Pumps 5-Pack Liquid Level Sensor $13.61
$1361
current price $13.61NIAIZEK Vertical Float Switch for Water Purifiers Pumps 5-Pack Liquid Level Sensor
Portable PE Tube Liquid Flow Sensor Switch Practical 1/4" NPT Water Flow Switch $8.57
$857
current price $8.57Portable PE Tube Liquid Flow Sensor Switch Practical 1/4" NPT Water Flow Switch
Suodoka Water Flow Sensor Switch with 1/2-inch / 1.27 cm Interface Electromagnetic Flowmeter Industrial Accessory for Liquid Air Dual-Use Equipment and Automation Systems $14.98
$1498
current price $14.98Suodoka Water Flow Sensor Switch with 1/2-inch / 1.27 cm Interface Electromagnetic Flowmeter Industrial Accessory for Liquid Air Dual-Use Equipment and Automation Systems
Stainless Steel Vertical Water Level Sensor Float Switch Liquid Level Switch
Stainless Steel Vertical Water Level Sensor Float Switch Liquid Level Switch
BIMZUC Blue Float Switch Water Liquid Level Sensor Controller PP Accessory for Pool Tank Equipment, 160 psi General Purpose Liquid Flow Switch (4.72 inches / 12 cm) $8.66
$866
current price $8.66BIMZUC Blue Float Switch Water Liquid Level Sensor Controller PP Accessory for Pool Tank Equipment, 160 psi General Purpose Liquid Flow Switch (4.72 inches / 12 cm)
Riousery SPDT R3/4 Liquid Water Oil Sensor Control Automatic Paddle Type Flow Switch 15A 220V IP54 HFS-20[cite: 1] $24.67
![Riousery SPDT R3/4 Liquid Water Oil Sensor Control Automatic Paddle Type Flow Switch 15A 220V IP54 HFS-20[cite: 1]](https://i5.walmartimages.com/seo/Riousery-SPDT-R3-4-Liquid-Water-Oil-Sensor-Control-Automatic-Paddle-Type-Flow-Switch-15A-220V-IP54-HFS-20-cite-1_b23bbaac-c842-4ed1-af5b-5f7098897e42.1087a3f8e978f36144491e73934b0278.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$2467
current price $24.67Riousery SPDT R3/4 Liquid Water Oil Sensor Control Automatic Paddle Type Flow Switch 15A 220V IP54 HFS-20[cite: 1]
Black & Decker Smart Wi-Fi Water Sensor $27.99
$2799
current price $27.99Black & Decker Smart Wi-Fi Water Sensor
Nieyigj Water Pump Flow Sensor Brass Electronic Pressure Automatic Control Switch HT801 220V $37.59
$3759
current price $37.59Nieyigj Water Pump Flow Sensor Brass Electronic Pressure Automatic Control Switch HT801 220V
G1/2 Hall Effect Liquid Water Flow Sensor Switch Flowmeter Counters 1-25L/min Black $12.49
$1249
current price $12.49G1/2 Hall Effect Liquid Water Flow Sensor Switch Flowmeter Counters 1-25L/min Black
Winland Surface Water Sensor, Supervised (W-S-S) $67.88
$6788
current price $67.88Winland Surface Water Sensor, Supervised (W-S-S)
Giaone Automatic Water Flows Sensor Switch Intelligent Water Pump Flows Sensor with Adjustable Sensitivity for Boosters Pump From $13.42
From$1342
Giaone Automatic Water Flows Sensor Switch Intelligent Water Pump Flows Sensor with Adjustable Sensitivity for Boosters Pump
YIEMEEN Sensor Water Pump Flow Switch 1 Inch Magnetic Automatic Control Pump Switch with G1 Thread 200W Copper Water Pump Switch $15.21
$1521
current price $15.21YIEMEEN Sensor Water Pump Flow Switch 1 Inch Magnetic Automatic Control Pump Switch with G1 Thread 200W Copper Water Pump Switch
Rupoun Waterproof 3-Wire NPN NO Proximity Sensor Switch PR08-1.5DN DC 12-24V for Machine Tools, Automatic Doors, 0.06 inch / 1.5 mm Sensing Distance $10.71
$1071
current price $10.71Rupoun Waterproof 3-Wire NPN NO Proximity Sensor Switch PR08-1.5DN DC 12-24V for Machine Tools, Automatic Doors, 0.06 inch / 1.5 mm Sensing Distance
Other options to consider(158)
Popular in Water Sensor Switch
- Hall Effect Switch
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