The two sensors eye touchless faucet KEG-8155D/A/AD uses active infrared sensor technology that allows starting the flow of water without touching the faucet. One sensor eye emits the infrared beams and one receives them. It is easy to install and single hole deck mounted on the basin. It’s a commercial touchless faucet that can be widely used in public restrooms or home bathrooms.

  • Brand: KEGE
  • Item No: KEG-8155D/A/AD
  • Easy installation and cleaning
  • Automatic adjusting sensor distance
  • Material: Brass
  • Hygienic, bacteria and germs free without touching


  • Touchless wave-on sensor: wave the sensor without touch, water flows, wave again, water stops. Water stops automatically after 1min continuously flow.
  • Automatically adjusting the sensing distance.
  • Water-saving: Water-efficient faucet reduces overall water usage without sacrificing water.
  • Energy-saving: 4AA alkaline batteries shall last approximately 3000 times/month for one year.
  • Easy installation and cleaning.
  • Outside connected battery box for a convenient changing between AC,DC and AD.
  • Healthy and Safe: with the touch-free faucet, it can prevent the spread of bacteria and germs. It’s not only time-saving but also hygienic.

infrared touchless sensor icon for touchless faucet

Active infrared sensor

Active infrared touchless sensors use the emission and reception of infrared beams to detect the presence and/or movement of objects or people in their field of detection. The technology is ideal for applications requiring a long and narrow detection range.

Automatic Sensor Faucet KEG-8155D/A/AD Specification

Power Supply                         Applicable water pressure  Applicable water temperature  Ambient temperature  Inlet/Outlet diameter 
DC: AA alkaline battery 4 / 4 × AA  0.05~0.7MPa  0.1-60℃  0.1~45℃  G1/2 and  G3/8 
AC:110V-240V  50Hz-60Hz
DC & AC Above two

Automatic Sensor Faucet KEG-8155 size

Touchless Tap KEG-8155D/A/AD Installation Diagram

With this installation diagram, you can easily understand the structure and know how to install it. Please also check our blog or view the installation manual.

Automatic bathroom faucet KEG-8155 installation

Infrared sensor with two sensor eye for commercial touchless faucet

As the most important part, the work of the sensor is to forward the signals to the valve to turn on the faucet after detecting your hand. Its job is to inform the valve when to start or stop the flow based on the presence or absence of your hands. The two sensors eye infrared sensor with one sensor eye emits the infrared beams and one receives them, it is specially suited for the touchless faucet KEG-8155D/A/AD.

The two eyes infrared sensor life span reaches to 500,000 circles, lasting more than 10 years.


Infrared Sensor Applications

The infrared sensor is widely used in public washrooms, such as touchless faucets, automatic urinal flushers, automatic toilet flushers, and automatic soap dispensers.

The infrared sensors can be also used for touchless kitchen faucets and bathroom faucets. Although they are still optional in homes today. But eventually, in the future, they will become a simple commonality for modern homes.

Infrared Sensor Application

Infrared Sensor Applications

Motion sensor faucet troubleshooting

Problem Possible Reason Suggested Solution
No water flow Batteries run out Replace batteries
Dirt on the sensor surface Clean the sensor surface
Main water supply is shut off Turn the main water supply on
Dirt on water filter net Clean the water filter net
Water pressure is not applicable Refer to the technical specification
Have a continuous water flow problem Batteries run out Replace batteries
Low water pressure Refer to the technical specification
Having leakage after turning off the faucet Low water pressure Refer to the technical specification
Dirt on water filter net Clean the water filter net

People who are asking more:

A touchless faucet uses active infrared sensor technology that allows you to start the flow of water without touching the faucet. Instead, just place your hand in front of the sensor will start the water flow, and the water will stop when you take your hand away.
If you forget to close the no-touch faucet, no problem, the sensor IC and program will control the water to stop automatically after 3mins continuous flow, time can be set.
More excitingly, the design of most touchless faucets is stylish and elegant to fit all basins, sinks, or lavatories, from classic to modern.

In a way, it does not. There is a built in mixing valve that is near the control box under the sink . You set the water temp from there. If you want to change it, you need to change the setting in the mixing valve. You cannot change the water temp from the faucet

Yes, it is for single hole touchless faucets. In case the sink has two or more, you can use the base plate to cover it.

Hello, buyer, this sensor faucet is made of high-quality brass and lead-free. If you have any questions, please contact us.

Hello,buyer, you need to adjust the water pressure in the main pipe of your home ,and then the water flow on the faucet will be changed. Hope this can help you.

There are combined reason for the touchless faucets not working. Please check below the main reasons for reference.

1. Battery issue: battery no power or battery installed in the wrong direction.
2. Sensor issue: the sensor got damaged, surface not clean or the waterproof cable connection issue.
3. Solenoid valve issue: the filter in the valve blocked or the valve is damaged.

Related products:

Related articles:

Automatic Sensor Faucet KEG-11-B115-1AD

Sensor tap price

As a touchless supplier in China and we researched and developed many years in key electrical spare parts. We offer one-stop sales … Read More