How can I communicate with my Smart Manifold?

The Smart Manifold can communicate via Ethernet, RS422 and RS232.  The Ethernet interface provides the best communications and control of the dehydrator by providing a web based interface.  Through this interface you can monitor the system, change the IP address, communications interface parameters, pressure and alarm settings. The default IP address from the factory is


The RS422 and RS232 can be used to monitor the system but has limited command capabilities’.  For details on all of these interfaces consult the user’s manual at the following link:


How do I setup my Smart Manifold?

The setup of the smart manifold can be done with the following steps:


  1. Set up the IP configurations for the Netcom’s and the smart manifold (configuration page)
  2. Set up the pressure parameters on the Netcom’s and set them for large system operation
    1.  Netcom configurations
  1. Set them for large system operation
  2. Settings between NETCOM’S and Smart Manifolds should match.
  1. Set up the smart manifold ports which can be configured (in the configuration page) as:
    1. Unused
    2. Input – this then requires the IP type and address of the associated NETCOM or none in the case of `ADH-2ACOM and ADH-3COM units as well as pressure tanks.
    3. Output – pressure output that will be shut down by the manifold if the leak rate is too high
    4. Crit. Output – Maintains an output pressure regardless of the alarms
    5. Bleed – defaulted to port 8, bleeds down the system in the event of overpressure
  2. Decide on redundant or parallel pumping
    1. Parallel if having volume issues
    2. If redundant consider setting the switch time to evenly use the compressors
  3. Determine test parameters
    1. For a single output system running approximately 6% duty cycle an output warning rate of 100 an output alarm of 200 and an output kill rate of 400 should allow operation without nuisance alarms
  4. Complete installation and pressurize system
Why is there a plug in port number 8?

Actually this is not a plug, it is a bleed.  If you examine it very closely you will notice that there is a small hole in the middle of it.  This is used by the Smart Manifold to bleed off pressure if it senses that it is too high and during its testing process for each line.

Will the Smart Manifold monitor moisture?

No.  The Smart Manifold monitors the pressure from each dehydrator and directs it to the appropriate port.  Each of the dehydrators is responsible for monitoring its own moisture levels and dealing with it accordingly.

Why does the Smart Manifold keep shutting off my output port?

The Smart Manifold runs a series of tests at intervals you determine during the setup process in the test “Parameters and Control” page.  One of these is an output kill leak rate.  If this rate is set too low or you develop a leak in the system you are feeding on that port the manifold will shut it down.


If this is a critical system you can set the port in the port configuration window as a “Crit. Out” and the Smart Manifold will never shut it down no matter how much it leaks.  However this could also cause the Dehydrators to alarm or warn of high duty cycles and leaky system.

Can I hook up an older ADH-2ACom or ADH-3 Com to the Smart Manifold?

Yes, but then you will need to set the units port as an input with no IP address.  The Smart Manifold will monitor it but will have no control over it other than to be able to open and shut its output through the manifold.


Mason's banner

MONDAY, JUNE 5, 2023 (WESTFIELD, IN) The ETI Network of Companies (ETI, ETI Fab, and ETI Controls) is proud to announce the hiring of Mason Tran for the Marketing Associate position and the continuation of top talent that broadens our global ability to expand support and develop our products. Mason has proven his leadership and marketing experience through ETI’s marketing internship program and looks forward to continuing to drive ETI’s marketing efforts within a full-time position.

“Having the opportunity to work alongside Mason the past year made it evident that The ETI Network of Companies and all its partners would greatly benefit from his abilities.” stated Ben Crawford, CEO.  “He brings a dynamic look into the marketing of our products and a unique knowledge of product positioning. “

Mason received a B.S. in Business High Distinction with a Major in Marketing from IUPUI Indianapolis. With a multilingual background, Mason has achieved his professionalism and experience through working as a Teaching Assistant at IUPUI as well as creating his own content for social media platforms.

“In this company, success isn’t measured by the products we sell, but by the relationships we build. Our customers aren’t transactions, they’re partners in our journey. When they succeed, we succeed. Our shared story is our greatest success. And I am genuinely thrilled to be a part of this shared success, helping to shape the journeys of our customers, learning from them, and growing alongside them every step of the way.” Mason stated.

ETI Network of Companies Private Label Capabilities – Have a product idea in mind? We can build it for you!


For over 55 years, The ETI Network of Companies has been the premiere choice for OEMs seeking fully customizable private label solutions from a partner that has served customers reaching over 100 different countries.  Our products branch out in various sectors of the electronics, metals, and plastics industries. Backed by our track record of proven products, design engineering, enhanced product testing and our insular manufacturing and assembly concept, we provide cost effective, highly innovative, and highly dependable products you can rely on.  We can help from the beginning of product development and take your product all the way to UL & CE product registrations.  Let our team move with speed and eliminate timely delays in the development and manufacturing processes. Have a product in mind? We can build it for you!


Our global markets include Telecommunications, Satellite, Snow & Ice Management, Heat Tracing, and General OEM customized built controllers and sensors. Deemed “Essential Business” by the U.S Federal Government during the 2019 COVID-19 crisis, our products are relied upon and trusted in mission critical systems.  To further support our insular initiative our Network manufactures internally printed circuit boards, enclosures, mill/lathe machining, welding (Robotic, Tig, Mig), fabricating, stamping and complete assembly down to the finest details. Find out today why OEMs, Government & Military agencies around the world rely on and trust The ETI Network.

Did You Know?



Did you Know?  ETI Network has added two distinct manufacturing capabilities.


ETI manufactures and assembles much more than electronic equipment! ETI Fab can fulfill your machining, fabricating, and welding needs. In 2019, Fab was founded in Westfield, IN to take on the constant demands of machining and fabricating. This has allowed the Network to become more insular and better control product quality and delivery. Our diverse employee base has many years of experience in disciplines from metal fabrication to CNC machining with various materials, including ferrous, non-ferrous, aluminum, bronze, copper, and plastics. Check out the ETI Fab website for more information! Link:


Also established in 2019, the ETI Controls located in South Bend, IN, can design and build your printed circuit board needs.  With our new Surface Mount Technology fully automated line equipped with Automated Optical Inspection has the capacity and resources to completely build and assemble your electronic requirements. The Network has expanded into private label of custom controllers and sensors. This has expanded core capabilities and private label initiatives tremendously and allows to better control our supply chain.


Have a question? Just ask your favorite ETI Network salesperson for more information!

Robotic Multi-Station Weld Cell Acquisition Announcement

In an effort of improving safety, accuracy and repeatability, The ETI Network of Companies is proud to announce the latest acquisition of an OTC Daihen Robotic Multi-Station Weld Cell. With “Speed is Our Weapon”, the new Cell diversifies the types of steel, stainless steel and aluminum used at the ETI FAB facility located in Westfield, IN. Along with the new cell, Camtek Optisolutions software was chosen to accurately and efficiently produce tooling and fixtures to support the Robotic Weld Cell.  This allows the team to create and design prototype and production fixtures in-house.


OTC Daihen, Inc. has a long history and is well-known for precision, quality, and minimal weld splatter. “Automation and the concept of the Smart Factory is a goal that we strive towards building every day at The ETI Network of Companies. First and foremost, the new weld cell enhances safety while significantly increasing part production. Further, we strive for continuous improvement in product quality, reliability and reducing variation in our processes.  Our goal is to be responsive to customers everchanging needs.” – Ben Crawford, President and CEO of ETI.

ETI & ETI FAB Are Hiring!


Positions Available

ETI & ETI FAB are equal opportunity employers. We offer competitive wages and great benefits.


  1. Firmware Engineer

For more information, or to apply for these positions, please contact ETI & ETI Fab HR representatives, here:



  1. General Laborer Position for 2nd Shift; Monday – Friday 3PM-11:30pm   

For more information, or to apply for these positions, please contact ETI & ETI Fab HR representatives, here:


What type of wire do I need to extend my lead length? Sensor vs. Thermistor

When installing ETI sensors and thermistors, you may find that you need to extend the leads greater than what’s already provided from the factory. Because the Snow Switch sensors operate at a higher voltage and use higher current than the thermistors, the recommended wire gauge differs between the two. To avoid confusion, we’ve created this writeup to explain our recommendations for extending the leads on ETI’s Snow Switch sensors and thermistors. For Snow Switch sensors, ETI recommends #18 AWG wire for up to 500 ft and #12 AWG wire for anything greater than 500 ft. On several product datasheets, #12 AWG wire is limited to 2000 ft because the average sensor runs 24 volts at 250 mA of current to limit voltage drop and low current issues.


Regarding the temperature sensors (thermistors), the requirement differs because the thermistor runs at 5 volts and approximately 2 mA of current, which is a negligible line loss. The main difference resides in the line resistance. ETI controllers use a 100k ohm thermistor with a negative temperature coefficient, so when the temperature decreases, the resistance increases. Since the thermistors are used for snow melt and freeze protection, the range of resistance used is 2.7Meg ohms (-40F °) to 75.2k ohms (+90F °). This means a single digit degree change will be marked by a resistance change of between 800k ohm per degree on the cold end to 2k ohms per degree on the hot end.


Since #22 AWG wire (which is what is specified on the thermistor) has a resistance value of 16.5 ohms per 1000 ft, it can be observed that the wire gauge will not make a considerable difference in the measurement of temperature. This means it is acceptable to use a #22 AWG wire to extend the cable.


#18AWG wire is 6.51 ohms per 1000 feet of wire and #12 AWG is 1.62 ohms per 1000 feet. It is worth mentioning because the #22 AWG may be the most cost-effective solution compared to the #18 or #12 AWG wire.


With all of that said, if the wire meets the work requirements for insulation and protection of the wire and meets ETI’s wire recommendations, it is acceptable to use #22 AWG or larger to extend the wires for the thermistor, and #18 AWG wire for up to 500 ft and #12 AWG wire for anything greater than 500 ft for ETI’s Snow Switch sensor cables





No, the FPT 130 provides a summary alarm via a dry contact relay.  This relay is energized whenever the unit is powered.  So, with power off the NC contact is closed, and the NO contact is open.  When the unit is powered these are in the opposite state.  A fault will de-energize the alarm relay and close the NC contact.  This allows for a default, power loss alarm without power.




Sales Associate

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 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at



Establish communications with the dehydrator through the Ethernet interface (default IP address from the factory is and navigate to the configuration page.  Here you can change the low pressure alarm, low pressure limit, high limit target and high pressure alarm settings.  You can also select between psig or mbar and small or large system settings.


Why the change?

In an effort to become more streamlined and to do our part for the environment, ETI is moving to a paperless system for all of our product Data Sheets, Installation Guides and Manuals.  Moving forward, all of our product lines; Snow Switch, Tracon and Netcom, will have a scannable QR Code on them that will lead the end user and/or installation expert to the ETI Product Supporting Document Library.  The Document Library will contain the most up to date information on all of the products in addition to information on our Legacy products.  All of the documents housed in the Document Library are available to download and print at your convenience.

How does it work?



Need Product Documentation In The Field

If you have any questions regarding this most recent update to our procedures please feel free to contact our Sales Team , +1-574-233-1202 or send us a message using the ETI Chat feature on our website.



Heat Trace with Plastic Pipes

Heat Trace with Plastic Pipes

Heat cable can be used on plastic pipes but the plastic’s durability and thermal properties must be considered. Plastic has approximately 125 times the thermal resistance than steel but is also more susceptible to damage from direct high temperatures. The key to heating plastic pipes is to use a lower temperature and distribute it as evenly as possible.

It is always a good idea to use a heat trace system with an automatic thermostat and control, but especially so when using heat trace on plastic pipe. An automatic heat trace control can monitor and maintain the system’s temperature, alarm for problems, and shut off the heat cable to prevent damage.

There is heat cable designed specifically for plastic pipes that is self-regulating and has limited wattage. Self-regulating heat cables have a conductive core between two bus wires that becomes more conductive when cold. This system increases the power to the cold spots and decreases it to the warmer areas, which provides a more even heat source.

The manufacture of the plastic pipe should be able to provide information as to the maximum temperature and how close heat cable can be spaced or wrapped on the pipe to avoid damage. Some applications may require heat cable to be applied to opposite sides of the pipe at a lower temperature to distribute the heat more evenly, avoiding one direct area of concentrates heat which may damage the pipe.

It is recommended to install a foil material between the pipe and the heat cable to avoid direct contact and help provide a more even heating. If doing this place the heat trace control thermostat directly onto the pipe with no foil over it or between it and the pipe to ensure a more accurate reading.

You can use heat cable on plastic pipes as long as you follow precautions, such as determining your pipe’s thermal capacities, selecting a self-regulating, low wattage heat cable and using an automatic heat trace control with safety functions. Following these guidelines will help prevent damage and increase the life of your heat trace system.




Sales Associate

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 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at




The GFEP indicator will come on when a ground fault occurs in one of the heater circuits.  The insulating resistance of the heater cable is breaking down or the cable has been damaged allowing current to pass to ground thru an incorrect pathway.  Left un-repaired the cable could cause a fire if it continues to be powered.


When a ground fault is detected the controller will not allow power to be applied to the heater circuits until the problem is corrected.  You can isolate the offending heater by removing all the heaters and reinstalling them one at a time to discover the heater with the fault. An alternative to this method is to use a Meg-ohm tester and test each heater leg per the manufactures specifications.


You will need to contact the heater manufacturer for instructions on how to locate the problem and fix it. Most heaters can be repaired with repair kits or splice kits but the manufacturer will be able to provide the details.


Temperature Controller – GPT-130













The GPT-130 displays a number of alarms, beside the ground fault it will also alarm for low current.  If you have disconnected the load to trouble shoot a possible ground fault in the heater cable, then you probably have a Low Current Alarm and a very low default ground fault current reading.

You can tell the difference by looking closely at the display, it will tell you what the alarm is for.  If you want to clear the low current alarm so you can test the controller then go into the configuration menu and disable the Low Current Alarm.

Remember to re-enable the Low Current Alarm when you are done testing and ready to put the unit back into service.





Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at



Position Available

ETI is an equal opportunity employers. We offer competitive wages and great benefits.


  1. Parts & Service Specialist / Customer Service

For more information, or to apply for these positions, please contact ETI HR representative:

Pennie Ritter

Pennie Ritter

HR Manager

(o): +1 574-999-1204

(m): +1 317-519-5766


TUESDAY, SEPTEMEBER 29, 2020 (SOUTH BEND, IN) The ETI Network of Companies (ETI, ETI Fab, and ETI Controls) is proud to announce the promotion of Anthony Macri to Director-Engineering. Anthony is a proven leader at ETI with over 5 years of experience as an Electrical Engineer.  In his first year with ETI, Mr. Macri’s background and knowledge were vital in the creation of ETI Controls (ETI’s In-house Board Building Division).


“Anthony was influential on The ETI Network Grand Strategy creation and is now leading the execution of the plan” stated Ben Crawford President & CEO”.  We are excited he accepted the position and with his energy and skill he will create an environment of speed and innovation of ETI custom designed products while launching private label manufacturing for new customers”.


Anthony received a B.S in Electrical and Computer Engineering Technology from Purdue University.  Prior to joining ETI, Anthony held the position of Electrical Engineer at Roush Industries in the Detroit area with a focus on wire harness automotive engineering. 


“I’m very excited about this new opportunity here at ETI,” Macri stated.  “ETI has established a great team of industry experts over the years and it is truly an honor to work with them every day.  With a continued focus on quality and product development, I see great things on the horizon for the entire ETI Network of Companies.”

September Is Sensor Placement Month At ETI



A great number of service calls come in with the common problem of the heaters not coming on even though it is snowing outside or there is ice buildup. After trouble- shooting the system it is discovered that the equipment is fine but there is no snow or ice on the sensor.


The proper placement of sensors is critical for the snowmelt system to operate. This is especially true if only one sensor is used, multiple sensors can be a little more forgiving for incorrect placement but to get the most out of the system it would be advisable to locate as many sensors in the “sweet spot” as possible.


The best person to determine the sweet spots for the sensors is the installer but to do so the installer needs to consider several parameters when considering the site and the final location of the sensor or sensors. These include but are not limited to:


          1.  Prevailing winds

          2.  Obstructions

          3.  Orientation of buildings and their affects on snow and drift patterns

Jeremy Crawford

Jeremy Crawford

Business Development Representative

(o): +1 574-999-1274

(m): +1 317-450-3200

1850 N Sheridan St
South Bend, IN 46628
+1 574-233-1202


Have a question you can’t find the answer to?  Just click the LETS CHAT bubble on any page and talk to a member of THE ETI CHAT BUNCH today.  

ETI IS HIRING – Shipping & Receiving Clerk


Positions Available

ETI is an equal opportunity employers. We offer competitive wages and great benefits.


Shipping & Receiving Clerk

For more information, or to apply for these positions, please contact ETI HR representative:

Pennie Ritter

Pennie Ritter

HR Manager

(o): +1 574-999-1204

(m): +1 317-519-5766


Snow & Ice Systems – APS-3C









QUESTION – Can I simulate a sensor call for heat to test the system?



ANSWER – Yes, by putting a jumper between pins 1 and 2 of the class two terminal blocks the system will respond as if the sensor were seeing snow conditions.  The snow and heat indicators will come on and relay or contactor will be pulled in.





Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at