Best Epttech in 2026

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.

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.

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

1/4" male national pipe thread

1/4" basic flow size

Maximum inlet pressure of 300 pounds per square inch

【SUPERIOR CLARITY】The welding helmet features top 1/1/1/1 optical clarity lens with advanced true-color technology and large viewing screen 3.86”×1.69”, it will vastly improve your vision experience then you can work efficiently and with precision.

【AUTO DARKENING FILTER】Helmet comes with high-end auto-darkening lens with 4 arc sensors, that switches from light to dark in 1/25000 sec, which let you adapt to different working environments by adjusting the lens's shade and sensitivity while you are operating ARC/MIG/TIG Welding.

【OPTIMAL EYE PROTECTION】The welding hood achieves safety and efficiency with its smart filters that protect your eyes from intense welding glare. Fully automatic up to DIN 16 at all time UV/IR protection, it reduces the risk of exposure to harmful light generated by the welding process and allows greater adaptability to various environment.

VCC: 2.7V to 5V.

The trigger is sensitive and quiet.

With high repeatability and no mechanical collision.

Larger Display Better View - Utilizing 8.5'' angle-adjustable LCD screen, this digital microscope offers 19% larger view than 7 inch microscope, delivering amazing visual experience on exploring the micro world without the need of external display. Great for electronics repairing, collection checking and coins observing as it allows you capture the whole image of the coin

Ultra Crisp Clear Image Quality - With original 12MP CMOS UHD camera sensor cooperating with the premium display, this upgraded model is capable of creating high quality images and videos. It allows you to capture real-time images and record videos with almost zero lag

50X-1300X Magnification - Allows you to zoom in and see the tiniest details at magnification range from 50X to 1300X in a full lighted view with 10 LED fill lights(plus 2 extra goose illumination). It's quite easy to zoom in and focus, just raise or lower the holder and rotate the knob, plug and play

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.

Product Name : Photoelectric Switch;Sending Light : Infrared Rays;Model :E3F-DS30P1

Wire Type : DC 3 Wire, Proximity-sensing / Diffuse Type;Type : PNP NO ;Voltage : DC 6-36V

Current : 300mA;Sensory Distance : 30cm;Head Diameter : 1.6cm/0.6'' ; Thread diameter: 18mm

Product Name : Photoelectric Switch;Sending Light : Infrared Rays;Model :E3F-5DN1

Wire Type : DC 3 Wire, Proximity-sensing / Opposite Type;Type : NPN NO ;Voltage : DC 6-36V

Current : 300mA;Sensory Distance : 5m;Head Diameter : 1.6cm/0.6'' ; Thread diameter: 18mm

Operating voltage: DC3-5V;Operating current: less than 20mA

Sensor Type: Analog

Operating temperature:10-30

This product is widely used in outdoors gates, garage doors, Weatherproof (IP66) construction for indoor/outdoor usage etc.

Supply Voltage:6-36V DC;Type : NPN（normally open ）;Wire Type : DC 3 Wire,Proximity-sensing / Opposite Type

Sensory Distance : 0-20m；Sending Light : Infrared Rays;Current : 300mA;Thread diameter: 12mm/0.47"

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.

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.

High quality, 100% Brand New.

Package: 50 PCS TCRT5000 Photoelectric Sensors

Model No. : TCRT5000L TCRT5000

HiLetgo 20PCS ITR9608-F Photoelectric Switch

Optical Interrupter Photoelectric Sensor

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

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 sensor has intelligent liquid level reference adjustment and liquid level memory function, liquid level status display mode, which can realize multi-point series connection; can support high and low level output, NPN, PNP signal output and RS485 communication interface output ;Open collector output mode, wide voltage range (5~24V), suitable for connecting various circuits and product applications(Please Choose the appropriate model for your usage).

High stability, high sensitivity, strong interference capability, free from external electromagnetic interference, special treatment for power frequency interference and common mode interference, to be compatible with all 5~24V power adapters on the market.

use: 1. +5 +5 is the positive input port of the power supply, which can be connected to a voltage of 3.3V~5V

2. GND GND is the negative input port of the power supply. OUT OUT is the signal output port, which is connected to the I/O port of the single-chip microcomputer. Generally, it is connected to an external interrupt.

For other main control boards or higher-level main control boards (such as Arm), if you need to set the I/O port to input/output mode, you must set it to input mode/receive mode, otherwise it cannot be used. 51 series MCU can be used directly, no need to set input and output mode

ROBUST HOUSING- Thick aluminum alloy shell, stable performance, powerful output , and reliable safety.

ACCURATE MONITORING- The detection is accurate and the response speed is as fast as 10ms.

SECURITY PROTECTION- This safety light curtain emits infrared light, resulting in a protective screens. When the light curtain is blocked, the device emits a blackout signal and control potentially dangerous machinery and equipment stops working, or an alarm signal, control and alarm devices to achieve the purpose of security.

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"

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".