Best Liquid Level Sensors in 2026

1/4" male national pipe thread

1/4" basic flow size

Maximum inlet pressure of 300 pounds per square inch

Approvals: CE, UL, CSA, NSF

Electrical Ratings: 240 VAC, 0. 14A; 120 VAC, 0. 28A; 120 VDC, 0. 07A; 24 VDC, 0. 28A

Stem Material: Polypropylene

Great tool for the Blind and Low Vision

Pocket-sized and easy to carry with you

Uses one 9-volt battery (included)

Contact Water/Liquid Level Sensor, This is a photoelectric water liquid level sensor that is operates using optical principles. Open collector output mode, suitable for connecting various circuits and product applications.

The sensor has no mechanical parts, requires no additional adjustment, and has high sensitivity, low power consumption, corrosion resistance, high pressure resistance, high temperature resistance and chemical stability.

This sensor probe is small in size and has a structure that can be placed up, down, laterally, and diagonally in multiple orientations to detect solution spillage, dryness and horizontal level. Can be used as a reminder and alarm function.

Float Ball Material: PP; Float Body Material: PP, the electrical life: can reach more than 1 million times.

Cable Length: 30cm, Float Ball Size(Approx): 19x16.5mm, Total Length: 45mm / 1.77", Temperature Rating: -20 ~ +80 C

The switch has the advantages of high sensitivity and durability. PP material is environmentally friendly and has excellent acid and alkali resistance.

The intelligent non-contact liquid level sensor uses advanced signal processing technology and high-speed signal processing chip to break through the influence of the wall thickness of the container and realize the true non-contact detection of the liquid level in the closed container.

The liquid level of various toxic substances, strong acids, strong alkalis and various liquids in the high-pressure closed container can be detected.

The liquid to be tested is required to be electrically conductive, the contact surface is non-metal, and the pipe is easy to install and can be widely used.

Can do multi-point control, the control switch can be fixed with the liquid level position

High accuracy, high reliability and easy installation

Made of 304 stainless steel material, can be used in weak acid and alkali places

Intelligent non-contact liquid level sensor uses advanced signal processing technology and high-speed signal processing chip to break the influence of container wall thickness and achieve a true non-level Contact detection.

Non-contact liquid level sensor is not afraid of affecting water quality, does not need regular cleaning, long service life

The liquid level sensor can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in high-pressure closed containers, has no special requirements on the material of the liquid medium and the cont

★Specification★: Max Switching Current : 0.5 A ; Max Breakdown Voltage : 220V ; Max Carry Current : 1.0 A ; Max Pressure: 100 PSI / 248˚F (120˚C) ; Wire Length : 300mm ; M10 Metric Thread. Model: ZS12010-2.

★Application★: Liquid level sensor is a device used to sense the liquid level in the storage tank. This product can be used for liquid level sensing, alarm, signal transmission in water dispensers, water purifiers, water heaters, coffee machines, small refrigerators and other home appliances. Specially used for fish tanks, water pumps, cooling barrel, ponds, agricultural equipment, cistern alarm, sump filter aquarium swim pool, garden, well, water towers and other fields.

★HIGH QUALITY MATERIALS★: The liquid level switch is made of high quality stainless steel as a whole, seamless laser welding, no burrs, compact & durable. High temperature resistance. Stainless steel even can work at temperatures up to 248˚F(120°C). The maximum pressure resistance of the stainless steel float can reach 30kg/cm2. Contacts are plated with rhodium, its life span can reach 2 million times. Switch liquid controller can be installed above or on side of the liquid level as required.

This is a non-contact water / liquid level sensor. It utilizes advanced signal processing technology by using a powerful chip (XKC-Y25-T12V) with high-speed operation capacity to achieve non-contact liquid level detection.

No contact with liquid makes the module suitable for hazardous applications such as detecting toxic substances, strong acid, strong alkali, and all kinds of liquid in an airtight container under high pressure.

There are no special requirements for the liquid or container and this liquid sensor is easy to use and easy to install.

Auburn WCC-1138L Liquid Level Sensor (CS 14450)

Alumina Insulation

Hex: 13/16"

Over-current and short circuit protection,With LED indicator, easily identifiable.

Widely used in automatic control industry for detecting, controlling, and noncontact switching. When proximity switch is close to some target object, it will send out control signal

The Proximity Sensor Switch is used for testing parts such as size and speed can also be used in frequency counters, frequency pulse generator, liquid level control and processing procedures for the automatic convergence.

Simple to use liquid level indicator for blind, visually impaired or elderly.

Easy to attach to most glasses and cups to have audible indicator of liquid levels to prevent overspill.

Small and easy to store. Measures 1.5 x 2.5 inch.

Max Contact Rating :10W.Max Switching Voltage:100V DC.Max Switching Current: 0.5A.

Temperature Rating: -30~125 degree Centigrade.Switch Forms：N.O /N.C.

Screw Thread: 1/2"NPT.Body Total Length : 11cm / 4.33".

It is a component widely used in automatic control industry for detecting, controlling, and non-contact switching.

When proximity switch is close to some target object, it will send out control signal.

The Proximity Sensor Switch is used for testing parts such as size and speed

Specifications: Operating voltage: 5V; Relay contact capacity: 10A / 250V; Controller size: 42 x 69mm; Sensor size: 83 x 21mm.

Three colors LEDs indicate low (red), medium (yellow) and high (green) water level, low water pumping or high water pumping respectively, and can be switched on and off by pressing the function switch rebound.

According to the water level of the detection pool (water tower), control the high current relay to realize the control, so that the water level is maintained between the low water level and high water level, easy to switch function.

This module adopts high precision AD sampling chip and 0-40KPa air pressure sensor.

Adopts 5K ohm resistor bridge sensor.

Pressure: 0-40KPa., Voltage: 3.3-5V. The specific air pressure value needs to be calculated

They have no moving parts and are ideal for point level sensing of water and other liquids.

Installation is simple and quick through the tank top, bottom or side.

The sensor offers ±1 mm accuracy and broad liquid compatibility.

[Liquid level transmitter]Input level transmitter and high-precision diffusion of silicon for more accurate monitoring of water level.

[4-20mA]Full digital conditioning circuit, 4-20mA signal output ensure more stable performance.

[IP68 waterproof]IP68 multi-layer waterproof protection ensure safe use and long service time.

Max Switching Voltage : DC100V; Max Switching Power : 10W; Float Ball Size : 26x26mm; Wire Length : 300mm; Screw : M10

The float switch can be installed at the top or bottom of the tank, depending on whether you want to detect water rising or falling.

Floating ball switch is a kind of liquid level control device with simple structure and convenient use. It has the advantages of small volume and long working life compared with general mechanical switch. When selecting the right material, any kind of liquid, pressure and temperature can be used.

1. Right-angle stainless steel level monitoring float switch, easy to install and high sensitivity; The rod body and screw are all 304 stainless steel, and the wire is high temperature wire and anti-corrosion process, which can withstand high temperature, and is very suitable for use in special liquid and high temperature environment.

2. Liquid level float switch sensor is type A contact (normally open). Working temperature range (- 40 ℃ - 200 ℃), contact power: 70W,

3. Water level switch sensor is packaged in electrostatic bag, each bag is equipped with a liquid level sensor, and the sensor is equipped with a 30cm extension cable, which is convenient for users to connect.

Intelligent liquid level benchmark adjustment and level memory function, liquid level display mode, can achieve multi-point series connection.

Strong compatibility through a variety of non-metallic material containers, such as plastic, glass, ceramics etc, with a 20mm induction distance. Electronic circuit structure rather than machinery ensures stable performance, durability and a long service life.

Wide voltage range (24V), suitable for connecting various circuits and product applications. Apply for all kinds of curved surface, arc, cylindrical container or pipeline liquid level detection.

They have no moving parts and are ideal for point level sensing of water and other liquids.

Installation is simple and quick through the tank top, bottom or side.

The sensor offers ±1 mm accuracy and broad liquid compatibility.

This module adopts high precision AD sampling chip and 0-40KPa air pressure sensor.

Pressure: 0-40KPa., Voltage: 3.3-5V. The specific air pressure value needs to be calculated

It can connect 2.5mm soft tube and detect the water level and other air pressure.

Pressure: 0-40KPa., Voltage: 3.3-5V. The specific air pressure value needs to be calculated

Voltage: 3.3-5V

Adopt 5K ohm resistor bridge sensor, and specific air pressure value needs calculating.

Measuring distance of sensor is 10cm to 2.5m from the sensor

Wired 15M remote monitor tank water level (Standard is 15M cable in the packing box. Can buy more 15M cable to lengther the distance )

Noncontact Ultrasonic Sensor can adapt to acid, alkali, salt, high temperature occasions

Clinically Proven: Pampers Sensitive wipes are clinically proven for sensitive skin

Thick and soft: Gently cares for your baby’s delicate skin

Skin-Friendly: Gentle and hypoallergenic—0% alcohol, fragrance, parabens and latex* (*No rubbing alcohol and no natural rubber latex)

The pressure sensor module adopts high precision AD sampling chip and 0-40KPa air pressure sensor

Liquid water level Ccontroller board can connect 2.5mm soft tube and detect the water level and other air pressure

3.3-5V digital barometric pressure sensor module adopt 5K ohm resistor bridge sensor, and specific air pressure value needs calculating by ourselves

This module adopts high precision AD sampling chip and 0-40KPa air pressure sensor.

Adopts 5K ohm resistor bridge sensor

Pressure: 0-40KPa., Voltage: 3.3-5V. The specific air pressure value needs to be calculated

Air pressure sensor module pressure: 0-40KPa; Voltage: 3.3-5V the specific air pressure value needs to be calculated; Voltage: 3.3-5V

This module adopts high precision AD sampling chip and 0-40KPa air pressure sensor, it can connect 2.5mm soft tube and detect the water level and other air pressure

Adopt 5K ohm resistor bridge sensor, and specific air pressure value needs calculating.