---
product_id: 674051051
title: "Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More"
brand: "waterguru"
price: "R38250"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Water Guru"
url: https://www.desertcart.co.za/products/674051051-waterguru-sense-s2-smart-pool-monitor-chlorine-and-ph-meter
store_origin: ZA
region: South Africa
---

# App-based real-time monitoring Patented optical sensor tech Automated chemical balancing Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More

**Brand:** waterguru
**Price:** R38250
**Availability:** ✅ In Stock

## Summary

> 💧 Dive into effortless pool perfection with WaterGuru Sense S2!

## Quick Answers

- **What is this?** Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More by waterguru
- **How much does it cost?** R38250 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/674051051-waterguru-sense-s2-smart-pool-monitor-chlorine-and-ph-meter)

## Best For

- waterguru enthusiasts

## Why This Product

- Trusted waterguru brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Advanced Optical Sensor:** Patented laminated-glass strip and flow sensor deliver lab-grade accuracy in chlorine, pH, alkalinity, CYA, and calcium hardness.
- • **Energy & Cost Efficient:** Optimize chemical use and energy bills by maintaining perfect pool balance with expert app recommendations.
- • **Plug & Play Installation:** Mounts easily on your skimmer—no tools, no hassle, just smart pool care in minutes.
- • **Tailored Chemical Guidance:** Personalized dosing advice based on your pool’s unique size and chemistry keeps your water pristine and inviting.
- • **Effortless Smart Monitoring:** Get daily, precise pool chemistry updates directly on your phone—no manual testing needed.

## Overview

WaterGuru Sense S2 is a smart pool monitor that uses patented optical sensor technology to measure Free Chlorine, pH, Total Alkalinity, Cyanuric Acid, and Calcium Hardness daily. It sends real-time water quality data and expert chemical balancing advice to your smartphone app, enabling precise, energy-efficient pool maintenance without manual testing. Designed for easy skimmer installation, it includes all essentials like the C5 cassette and float ring, making pool care seamless for spas, hot tubs, and pools.

## Description

Get precise pool water test readings sent straight to your phone with Water Guru’s Sense S2 Smart Pool Monitor. App-Based Monitoring No more swimming pool test strips and last minute trips to the pool supply store. With our app, you can see your up-to-date pool data, easily keep track of your pool’s water quality and take preventative action to maintain the chemical levels. Easy To Install Most water test kits require tools and equipment to install. The WaterGuru SENSE is a smart water monitoring device that you can install on your skimmer with its smart sensor dangling in the water in the skimmer basket. Optimized Pool Health The Water Guru Sense Smart Pool Monitoring System uses patented optical technology to measure daily the Free Chlorine (FC), acidity (pH), Total Alkalinity (TA), Cyanuric Acid (CYA) and Calcium Hardness (CH) of your pool water. How It Works ✔︎ Patented Technology - Optical sensor precisely reads the color of each measurement pad, registering small changes indiscernible to the naked eye. ✔︎ SENSE’S Film Strip - Made from laminated-glass components to ensure stability in chlorinated water. ✔︎ Flow Sensor - Measures pool chemistry while your pump is on. Make pool maintenance effortless with WaterGuru.

Review: It is costly, but it is GREAT to bring up on the phone and see water temp, PH, Alk, Free Chlorine, etc. After entering the Pool Gallons, it also provides recommendation of quantity of chemical to add to bring chemistry into spec. It will provide links to purchase the chemicals from them, but I found purchasing the chemicals from desertcart to be a much better deal. If it eventually fails (hopefully long time from now) I would buy another one.
Review: Worked for about 4 months. Then stopped with daily measurements. Gave manual readings for about a month and now won’t give readings at all. The cassette is supposed to last 30 days but it does not. I have them on automatic shipment and have a bunch of useless cassettes. I consulted the help section and done everything suggested to resolve the issues. For a $400 device it’s absolutely ridiculous. I have contacted customer service, will update review.

## Features

- Your Smart Pool Solution - Our smart pool monitor balances your pool perfectly and saves you money on energy bills and over-treating. Discover how Water Guru Sense 2 delivers worry-free pool care in the palm of your hand, no manual water testing is required
- Easily Monitor Your Pool - Pool water can be deceptive. You need a digital pool water tester that reveals the unseen truth. The Water Guru Sense 2 comes with a patented optical sensor, a laminated-glass strip, and an integrated flow sensor for effortless pool testing.
- Simplified Pool Care System - This smart device is an efficient pool chemical monitoring system that gives you precise pool water test readings. By accurately testing water quality, you can enjoy a pristine, clear, and balanced pool, ready for family, friends, and even pets to enjoy.
- Get Expert Pool Advice - This is not like your ordinary pool test kit. The Water Guru Sense 2 also gives expert advice based on the precise data of your pool's chemical composition, size, and type.
- Sense S2 Inclusions - Utilize everything you need for an optimal pool monitoring system. With saltwater compatibility, the WaterGuru SENSE S2 comes with the SENSE S2 C5 Cassette, 4 “C” Batteries, Float Ring for Spas and Above Ground Pools, and a Quick Start Guide.
- Exclusive Compatibility - The WaterGuru SENSE S2 is compatible only with the WaterGuru SENSE S2 C5 Cassette (included with purchases), which measures Free Chlorine (FC), acidity (pH), Total Alkalinity (TA), Cyanuric Acid (CYA), and Calcium Hardness (CH). The C5 Cassette is designed to last 1 month based on daily water measurements. Alternatively, the S2 can use the SENSE S2 C2 Cassette, which measures Free Chlorine (FC) and acidity (pH) and lasts 2 months with daily water measurements.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BT7BYJQ3 |
| Batteries Required? | No |
| Batteries included? | No |
| Control method | App |
| Customer Reviews | 3.4 3.4 out of 5 stars (157) |
| Date First Available | 12 May 2023 |
| Global Trade Identification Number | 00850011421352 |
| Item Weight | 2 kg |
| Item model number | WG-SENSE25 |
| Manufacturer | WaterGuru |
| Mounting type | Skimmer Mount |
| Part Number | WG-SENSE25 |
| Product Dimensions | 25.4 x 25.4 x 49.53 cm; 2 kg |
| Sensor technology | Optical |
| UPC | 850011421352 |
| Voltage | 1.5 Volts (DC) |

## Product Details

- **Battery description:** Alkaline
- **Brand:** WaterGuru
- **Colour:** White
- **Compatible devices:** Inground pools, all pools, hot tubs
- **Power source:** Battery Powered

## Images

![Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More - Image 1](https://m.media-amazon.com/images/I/41wfK+D84SL.jpg)
![Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More - Image 2](https://m.media-amazon.com/images/I/51+EnJOXKZL.jpg)
![Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More - Image 3](https://m.media-amazon.com/images/I/512rccLzdbL.jpg)
![Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More - Image 4](https://m.media-amazon.com/images/I/51Br7ERX9eL.jpg)
![Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More - Image 5](https://m.media-amazon.com/images/I/51l0fSrXc+L.jpg)

## Questions & Answers

**Q: How does the WaterGuru SENSE Work?**
A: The WaterGuru Sense S2 installs in your skimmer and uses optical tech to measure FC, pH, TA, CYA, and CH daily. The app shows your levels and provides custom advice based on your pool type, size, and chemicals to keep water balanced.

**Q: What’s in the Box?**
A: Includes the WaterGuru Sense S2, a C5 Cassette, 4 C batteries, a float ring for spas or above-ground pools, and a Quick Start Guide to help you install and get set up in seconds—everything you need to start smart pool monitoring right away.

**Q: Do I need Wi-Fi access near my pool for the WaterGuru SENSE to work?**
A: Yes. You will need Wi-Fi access at the pool area where the WaterGuru SENSE will be installed.

**Q: WaterGuru Pool Skimmer Monitor vs. Floating Pool Monitor – What’s the Difference?**
A: Floating monitors can drift, get damaged, or pose safety risks in active pools. WaterGuru Sense sits safely in your skimmer, out of the way, and delivers more stable, accurate readings by staying in constant water flow—no interference, no hassle.

**Q: Pool Test Strips vs. WaterGuru Chemical Monitoring?**
A: Test strips are time-consuming and often inaccurate. WaterGuru Sense sits in your skimmer and uses smart optical sensors to test key chemical levels. View results in the app with personalized advice—no guesswork, color matching, or manual testing.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***D on 23 July 2025*

It is costly, but it is GREAT to bring up on the phone and see water temp, PH, Alk, Free Chlorine, etc. After entering the Pool Gallons, it also provides recommendation of quantity of chemical to add to bring chemistry into spec. It will provide links to purchase the chemicals from them, but I found purchasing the chemicals from Amazon to be a much better deal. If it eventually fails (hopefully long time from now) I would buy another one.

### ⭐ Review
*by J***E on 25 December 2025*

Worked for about 4 months. Then stopped with daily measurements. Gave manual readings for about a month and now won’t give readings at all. The cassette is supposed to last 30 days but it does not. I have them on automatic shipment and have a bunch of useless cassettes. I consulted the help section and done everything suggested to resolve the issues. For a $400 device it’s absolutely ridiculous. I have contacted customer service, will update review.

### ⭐⭐⭐⭐⭐ Review
*by H***. on 8 July 2023*

I had been one of the earliest pHin users, until Hayward acquired it and then eventually shut it down. I can understand why, since I had received in total 5 warranty replacement units. Then, I decided to go without a monitoring device for one season, which worked fine, until it didn't this year, when I went on a two week international trip and then I returned to a full algae bloom. My gamble that I would be back in time did not pay off, so I got the WaterGuru2 to stop flying blind and Wow! it's so great to have this level of fine grained data. I had been toying with Pentair pH & CL test kits and then the Taylor test kit too, but now I always exactly where my measurements are at. Now I've got a much better handle on all the major variables in my pool, which actually took a while to fully understand since I didn't know any of this before. As you can see from my screen shots, my pH is currently a bit low, but I'm told that's reasonable since I use the Tri-Chlor slow dissolving tablets, but my CYA (CYanuric Acid) is through the roof too high. We figured out today that this is because I had been using 99% DiChlor to shock my pool, which spas like to use, but it's not appropriate for my pool, so I need to switch to 68% Calcium Hypo. I'm also going to see if a new CYA remover does what it says it can do, to get my CYA down to normal levels. I'm also going to add in Green to Clean since my high CYA is preventing the full killing of some nagging algae that still remains and likes to come back. The WaterGuru support team, both Tier 1 and Tier 2 have been a true pleasure to work with. With your purchase of the WaterGuru2, you get two types of Sense2 cartridges, 1 C5, which monitors pH, FC plus CYA, Hardness and total Alkalinity and lasts 30 days, and 2 C2's, which measures just pH and FC daily and these each last for 60 days. Once you get into a steady state C2's are enough. By the way, if you're recovering from something as bad as an algae bloom, please refrain from excessively invoking "Measure" on the WaterGuru2 app, since this will shorten the life of the cassette dramatically, since the measuring film scrolls through the cartridge and it will run out faster. By default the WaterGuru2 measures the water once a day and that's actually good enough for residential owners. Anyone who loves data and is tired of "winging it", or "excessively shocking your pool", or "just paying too much monthly to your pool person" should get a WaterGuru 2.

## Frequently Bought Together

- Waterguru - Sense S2 Smart Pool Monitor - Chlorine & pH Meter - CYA & Alkalinity Tester Pool Water Tester - Spa & Hot Tub Monitor - Includes WaterGuru Sense S2 C5 Cassette, Float Ring & More
- WaterGuru - Sense Skimmer Adapter - Smart Pool Monitor - Chlorine & pH Meter - Pool Water Tester - Monitor Pool Chemicals (10” Square Skimmer Adapter)
- WaterGuru Sense S1 Smart Cassette - 3 Pack - Compatible with The WaterGuru Sense S1 Smart Pool Monitor only - Chlorine & pH Pool Water Testing Smart Device

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-01-31*