Top 10 Best water level sensor in 2026

Main highlights

• •Real-time Notifications (No Hub Needed): After connecting to Wi-Fi, you will be able to receive real-time email and app notifications remotely when dripping, leaking, or flooding is detected, without the need to purchase an additional hub. Share devices with family, and they can also check home status at any time. (2.4Ghz Wi-fi Only)
• •High Sensitivity Drip Alarms: This device is equipped with four sensor probes at the top and bottom, which can detect a low water level of just 0.5mm. If water pipes drip, and your floor is submerged, or gets wet, it will sound an alarm. Water Leak Detector is compact and convenient in size, suitable for placement in laundry rooms, water heaters, dishwashers, sinks, and other places.
• •Water Level Detection: Equipped with a 1-meter extended probe, you'll be able to detect changes in water levels of places like swimming pools, bathtubs, and fish tanks. It can also be placed in narrower areas, such as inside refrigerators or washing machines. And is suitable for homes, warehouses, basements, sinks, water heaters, pipelines, and more.
• •Includes Loud Alarm Sounds: To help you stay alert, we've included 100dB high pitched alarms, which means even if there is a leak in basements or places a little further away, you'll know in a timely manner. Once discovered, you can manually set it back to mute without worrying about noise issues.
• •IP67 Waterproof, Up to 2 Years Battery Life: Water Leak Detector is designed with a fully sealed waterproof shell and can easily handle high humidity working environments. It comes with 2 x AAA batteries and has a battery lifespan of up to 2 years. When battery is low, our app will also send notifications to remind you to replace them in a timely manner.
• •Part of SwitchBot Ecosystem, Voice Command Compatible: Use with SwitchBot Plug Mini or Indoor Cam, and remotely turn off electrical equipment or check the condition of your house in case of leakage. It can also support third-party services such as Alexa/Google/Siri/IFTTT/SmartThings.

Main highlights

• •The CQRobot non-contact liquid level sensor realizes non-contact detection of the liquid level in a closed container. It adopts advanced signal processing technology and high-speed signal processing chip, breaking through the influence of container wall thickness. It is simple to install and easy to use, and can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in high-pressure airtight containers.
• •The principle is to use the inductive capacitance of water to detect whether there is liquid. When there is no liquid close to the sensor, the sensor has a certain static capacitance to the ground due to the existence of distributed capacitance on the sensor. When the liquid level slowly rises and approaches In the case of an inductor, the parasitic capacitance of the liquid will be coupled to this static capacitance, making the final capacitance value of the inductor larger.
• •The changed capacitance signal is then input to the control IC for signal conversion, which converts the changed capacitance into a change of a certain electrical signal, and then a certain algorithm is used to detect and judge the degree of this change. When the change exceeds a certain amount It is considered that the liquid level has reached the sensing point when the threshold is reached.
• •High stability, high sensitivity, strong interference ability, no external electromagnetic interference, special treatment for power frequency interference and common mode interference, strong compatibility, penetration of various non-metallic containers, such as plastic, glass, For ceramics and other containers, the sensing distance can reach more than 12mm; liquid, powder, and particulate matter can be detected.
• •The sensor comes with 2 DIP switches, the right DIP switch controls the output voltage (high level) of the signal terminal (green line); when the DIP switch is dialed up, the high level is 5V; when the DIP switch is facing When dialing down, the high level is 3.3V. Compatible with Arduino, Raspberry Pi and Other Motherboards.

Main highlights

• •Water Level Sensor: Determine water level by measuring the volume of a drop/water with a series of exposed parallel wires
• •Working voltage: DC 3-5V
• •Operating current: less than 20mA
• •Commonly used in: HVAC, dehumidifiers, testing instruments, automobiles, automatic control, weather stations, humidity regulators and other related temperature detection and control

Main highlights

Main highlights

• •MANY APPLICATIONS! Sump pump alarm, AC condensate pan overflow alarm, runaway toilet/jammed flapper, internal toilet leak alarm, fish tank, pond, fountain, rainwater drum/tank, cistern, water storage tank high or low level detector
• •SPEND LESS, GET MORE! YoLink smart sensors are not only economical but they are part of a growing family of products compatible with your Water Level Monitoring Sensor. Shut off or turn on water on high or low level detection, turn pumps on/off, activate sirens and lights. Automatically.
• •WIRE LESS! The sensor is wireless and battery-powered, with LoRa-based extreme long-range wireless (up to a 1/4 mile open-air!), so you can put your sensor where WiFi and older RF technologies can't go. No cables, conduit, raceway, trenching, or electrician required!
• •EASY DIY INSTALLATION with our innovative pendant-mount style float switch. Simply hang or suspend the float switch into the monitoring tank or container. The float switch's stainless steel washers provide ballast for stability against wave action, and also provide edge/sidewall protection. Tie wraps and tie wrap mount included.
• •KNOW NOW! This is a smart device with a full-featured app. Beware of products that require you be in earshot of the alarm. Types of notifications available to you include: app push notifications, email, SMS, siren or lighting activation, SpeakerHub sound or spoken messages. Each account receives 5 SMS per month per device, plus 5, free. YoLink Siren, Switch, Plug, Relay or SpeakerHub purchased separately.
• •ALARMING! The sensor has a built-in 105dB sounder, for local, indoor alarms. Or, add an optional remote Siren Alarm or other YoLink alarm product. Search B0887SMPKK for the Siren Alarm.
• •Looking for water depth monitoring? Our new Water Depth Sensor includes a water pressure sensor probe, capable of measuring water depths up to 16 feet (data reported in centimeters deep). Search B0C5QX3HHQ. Looking for the original Water Level Monitoring Sensor with probe? See the Water Leak Sensor 3, for applications not practical for a float switch, such as for washing machine water drain pipe backup detection. Search B08T8X4XWN
• •Looking for the optional ruggedized wall-mount bracket? The optional bracket provides the sensor with additional protection against impact, casual tampering and cord removal. Search B0C4PFTFM2
• •Compatible with Alexa, IFTTT and Home Assistant.
• •YoLink Hub is REQUIRED! This device will not operate without one of our hubs, not included. We recommend SpeakerHub, our talking, custom tone & sound, hub. Please search B09FSS95G9 for the SpeakerHub, or B07TQLKQLJ for the original Hub.

Main highlights

• •4 Mode and Auto/Manual Switch:Water Suply,Drain,Lack Water Stop,Joint Mode.The controller also comes with manual and automatic switches, which can be switched as needed.
• •Automatic Water Level Management: Monitors and controls water levels automatically, preventing overflow and dry running.
• •Reliable Detector Sensor Technology: Equipped with high-quality detector sensors for accurate water level detection and long-lasting performance.
• •Support for Multiple Devices: Allows control of diferent devices, pump, electric ball valve, solenoid valve imultaneously, perfect for large homes, commercial buildings, or agricultural applications.
• •No Manual Intervention Needed: Completely automated system reduces the need for manual operation, making water management effortless and stress-free.

Main highlights

• •【4 Modes】Water Supply Mode,Drain Mode,Lack Water Stop Mode,Joint Mode.
• •【110V-120V】The water level controller can be used for the 110v solenoid valve, electric ball valve, water pump to use with the controller.The load current of the controller is 10A.
• •【Stainless Steel Detector with 6.5ft Wires】Corrosion, no rust, suitable for long-time use.
• •【Application】This pump controller can help you realize the automatic water supply and drainage of fish ponds, reservoirs, swimming pools, and water tanks.
• •【Noitce】Before installation, please make sure you have electrical knowledge. If you have questions about product use, please contact us.

Main highlights

• •A float switch is a device used to sense the level of liquid within a tank, it may actuate a pump, an indicator, an alarm, or other device.
• •Use them with hydroponics, saltwater tank, freshwater tank, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating etc.
• •Good quality, Not easily damaged and good quality.
• •Package Indluced：3 pc Water Level Sensor Horizontal PP Side Mount Float Switch For Tank Pool Arduino
• •Thank you so much for your purchasing from our store.Any question ,please feel free to contact us.

Main highlights

• •[Accurate Detecting] The Liquid Level Sensor Cable features a high precision silicon diffusion input level transmitter that provides more accurate detecting and monitoring of water levels. This ensures greater reliability and optimal performance
• •Equipped with a full digital conditioning circuit and 4-20mA output, this Submersible Transmitter Water Level Sensor Detector Cable promotes and more data. This feature is essential for various applications when accuracy is critical
• •[Sturdy and This Liquid Level Transducer Sensor Cable has multi layer IP68 , ensuring and long lasting use. Its 45 degree oblique angle anti impact and probe detachable anti blocking design make it even more and rugged
• •[Wide Temperature Range] The Liquid Level Sensor Cable can operate within a temperature range of -40-80℃, providing greater flexibility across various applications. Its temperature compensation feature ensures accurate and data, even in varying environmental conditions
• •[Versatile Compatibility] Made from 304 stainless steel, this sensor cable can measure water levels accurately. It is not recommended to measure other liquids or liquids that can corrupt stainless steel. However, it is compatible with different power supply voltages and can support 12-32VDC