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ePool Smart System Wireless Water Chemistry Monitoring
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The simple, wireless and accurate ePool® Smart System saves you time and money so you can enjoy your pool more often and spend less time maintaining it. This innovative system includes a floating sensor, USB receiver and user friendly downloadable software that transmits your pool’s pH, Sanitizer and Temperature levels 24/7. Constant monitoring eliminates unhealthy spikes and dips in pool chemicals that commonly occur with periodic manual testing or weekly servicing. No more calculating, guessing or test kits required. Effortlessly check your status from your computer or smartphone with simple email and text alerts indicating exactly what and how much to add to your water for a Smarter, Healthier Pool.

  • Works on regular, salt water and mineral pools
  • Continual 24/7 monitoring of pH, chlorine and water temperature
  • Accurate analysis
  • No guesswork or test strips needed
  • Easy to set up and use with any PC or Mac
  • Easy to read messages automatically sent to your computer
  • Can be programmed to send email and text messages
  • Software upgrades easily managed
  • Patented technology
  • Includes 20 consumer handouts per master case
  • Requires four (4) AA batteries (not included)
  • 1 year Customer Support
  • Full replacement warranty-90 days
ePool Smart System Wireless Water Chemistry Monitoring
$ 229.99 New Available online

How does the ePool® Smart System™ work?

The ePool® Smart System™ uses the same sensors used by commercial pool systems, water treatment plants and laboratories to measure water chemistry. The readings taken by the Floating Sensor are wirelessly transmitted in “packets” every five minutes. If the Receiver is plugged into your computer system, the data in the packets are analyzed according to your initial setup configuration (pool type, chemicals used, pool volume, etc.). The System performs calculations to determine whether the sanitizer or pH need adjustment and displays the results on the Software screen. Alerts are also sent to your email or cell phone as text messages through Twitter, if it has been configured to do so.

For additional details about each component, go online and search for the following: ‘pH Electrode,’ ‘pH Meter,’ ‘ORP Electrode’ and ‘ORP Meter.’

What does the ePool® Smart System™ measure? What doesn’t it measure?

The ePool® Smart System™ is able to measure three important levels in water: pH, which is a measurement of the acidity of the water; ORP, which is a measure of the effectiveness of the sanitizer; and temperature of the water.

The ePool® Smart System™ does not measure all important variables in water chemistry, however most of these change slowly over longer periods of time and do not require the constant observation that ePool® provides. ePool® does prompt you to have these readings tested regularly at your local pool supply retailer. When the results are input to the software, it will let you know if the readings are outside the ASPC/NSPI recommended range.

Chemical levels not monitored:

  • Total Alkalinity (TA): Very important, as it affects the way pH adjustments happen in the pool water.
  • Calcium Hardness: Proper range ensures reduced scale formation or “chalking” of pool walls.
  • Cyanuric Acid/Conditioner (CYA): Proper range ensures that sanitizer effectiveness (ORP) will remain high enough to protect swimmers during sunlight hours. If the Cyanuric Acid levels are too high (over 50ppm), it will “bind” the sanitizer, rendering it ineffective. In addition, ORP sensors, such as the one in ePool®, do not function properly with Cyanuric Acid levels over 50ppm. NOTE: Indoor pools or spas do NOT need CYA or stabilizer.
  • Phosphates: Think of phosphates as “algae food.” The higher the phosphate levels, the higher your chances of having an algae problem. Low is good – zero is better.
  • Total Dissolved Solids (TDS): This is a measure of ALL solids dissolved in your pool water. This includes Calcium and anything else. Pools equipped with a salt chlorine generator will have a higher Total Dissolved Solids number. Too high, and the addition of other chemicals can be negatively affected.

Total Alkalinity and Phosphates may be adjusted by adding chemicals per your local pool supply store’s recommendations. Calcium Hardness, Cyanuric Acid and Total Dissolved Solids can only be lowered by draining water from the pool and adding fresh water. It is important to note that evaporation does NOT count as “removing water” and is, in fact, the reason these readings creep up over time.

Your pool or spa is a delicate balancing act – ePool® makes maintaining safe, comfortable, attractive and enjoyable water easier and more accurate.

What is ORP? Why not just give PPM?

ORP stands for Oxygen Reduction Potential, also known as “Redox.” Most sanitizers, including chlorine (“salt water” pools are actually chlorine pools), bromine and ozone, use oxidation to kill bacteria and break down organic compounds which your filter can then remove. PPM, Parts Per Million, is a measure of the number of Parts of chemical sanitizer there are per One Million Parts of water.

However, the effectiveness of those Parts Per Million is not given by a simple PPM reading. It is very possible to have an “acceptable” PPM level, say 2.5ppm, but have the sanitizer be dangerously ineffective. If the pH is too high, or the CYA levels are too high, your pool may have acceptable PPM levels, but in fact be dangerously low in its ability to kill harmful bacteria.

ORP cannot, in fact, “measure PPM.” However, we can estimate “effective” PPM, which is given as a number on the EPOS main screen. This number is based on a calculation of the pool’s ORP level, the pH number and the water temperature. Based on these three numbers, the “effective” PPM can be estimated.

For example, if your “actual” PPM of free chlorine is 3.0PPM but your pH is at 7.8, your “effective” PPM may be closer to 1.0PPM. Higher pH causes ORP to drop so your sanitizer is less effective at higher pH numbers and more effective at lower numbers. At a pH of 8.0, your oxidization-based sanitizer is 10x less effective than it is at a pH of 7.0. Why not just keep the pH at 7.0? Because of swimmer comfort and other factors such as preservation of pool equipment. pH that is too low can result in destruction of plaster, stainless steel and seals.

The World Health Organization (WHO) has established a minimum ORP reading of 650mV (ePool’s “Red Line”) as a standard for sanitized water. ORP readings below this minimum indicate dangerously low sanitizer effectiveness and could result in the harmful growth of microorganisms in your pool.

Think of it like this: Your pool or spa is a battlefield. Bacteria, virus, organic matter, etc. are the enemy. PPM is the number of soldiers you have on the battlefield. ORP is an accurate measurement of the morale of your soldiers – how willing they are to kill.

How tight should I make the battery cover on the Floating Sensor?

As tight as possible, within reason. If you’ve installed fresh alkaline batteries into the Floating Sensor, the batteries should last for over a year and a half. The radio protocol used in ePool® is very energy efficient. Water tends to get everywhere we don’t want it to and anything with a seal is a potential leak. So be sure the gasket and surface of the top of the battery compartment are clean and clear and tighten away. We’ve taken care to design ePool® so that the seals are both redundant and naturally float above the water line to help avoid any leaks.

I registered my ePool® Smart System™ but didn’t receive an email with the link to download software. What do I do?

Please check your Spam and Junk Mail filters in your email. Often, this is where the message was delivered. Also, please add “” to your address book to ensure you receive all notices regarding any Critical Software Updates.

I’m having trouble pairing during initial setup. What do I do?

Check the freshness, size (AA) and orientation of the batteries in the Floating Sensor’s battery cage. If everything is OK, there may be a problem with the battery cage wire which is a known manufacturing issue in early production units.

I want ePool® to send my pool information to multiple email addresses. Is that possible?

Yes. Simply separate each email address with a semicolon, including no spaces. For example:;;

Alternately, you can set up a Twitter account for your pool. In addition to having Twitter send messages to your phone via text message, other Twitter users can “follow” your pool and see the same information.

I don’t really want to leave my computer on all the time – will ePool still work if I turn my computer off?

Yes, the ePool® Smart System’s Floating Sensor continues to send data even if your computer is turned off. Data will not be received by your software but once you turn your computer back on and plug in the ePool Receiver to the USB port, it should receive a packet within 15 minutes and generate updated readings. You will see a flat line in the graph for the time the computer was off but the Floating Sensor was still working; there is no need to re-stabilize the system.

The ePool® software says I stopped receiving readings hours ago. It was fine before that. What do I do?

In some Windows systems, there is an issue with the way Windows transfers data from the USB port to the system, causing intermittent “hangs.” We are working on finding a way to resolve this Operating System issue. The immediate fix is to simply unplug the Receiver from your USB port, wait 10 seconds, then plug it back in. Your readings should resume within 5 minutes.

My ORP goes way up at night and drops during the day. Why?

Sunlight – specifically UV – beaks down your sanitizer, causing the ORP to drop. This is normal and a real physical effect. A healthy pool’s ORP levels resemble a “heartbeat” over time – up at night, down during the day. ePool® will help you see when your sanitizer is wearing out or becoming dangerously low too often during the day.

After a few people swim in my pool for a while, the ORP reading drops. Why?

This shows that your sanitizer is working. The people in your pool carried in oils, skin cells, sweat…and maybe a few other things. There simply isn’t as much oxidizer available because it did its job. The ORP should recover within a few hours. If not, this is an indication that it may be time to shock your pool.

Why does the pH on my salt water pool appear to jump up?

This is usually caused by the electrolysis cell forming “hydroxide” as a by-product during the process of forming chlorine (sanitizer) from the salt in your water. This is a normal part of the electrolysis process and the pH in a salt water pool must be more closely monitored. To help lower the amount raised, try reducing the power to the salt generator cell and set it to run for a longer duration.

I want to change computers. How can I preserve my history and setup?

In the top menu bar of the Software, go to File > Save Diagnostic File. After that file is saved, transfer it to the new computer. Load the Software on the new computer and go through the setup process. When setup is complete on the new computer, again go to the top menu bar, select File > Load Diag File and navigate to the folder with the file saved from the old computer. Select the file and click Open. This will transfer your history to the new system.

I want to use two computers. Is it possible to have the software loaded onto two computers?

Yes, but they can’t be used at the same time. The Floating Sensor pairs with one receiver during setup. You can plug the Receiver into either computer but the data gathered while plugged into the other will simply be “missing,” as if the computer were turned off.

I would like access to the “raw” data. Where can I get that?

In the Software, go to File > Export CSV file. This will export a CSV file (Comma Separated Value) which most spreadsheet applications, such as Excel, can open.

I would like to integrate the ePool® Smart System™ into my custom Home Automation System and I want to write my own software to interpret the data. How can I do this?

The raw data packets are transmitted via USB to Serial converter. You can check the Device Manager to see which COM port the Windows COM Port Enumerator has assigned to the Receiver. The packets are not encrypted, and in fact monitoring tools are available free from Atmel (WSNMonitor) to allow you to see this data.

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ePool Smart System Wireless Water Chemistry Monitoring

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