---
product_id: 674051051
title: "WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries"
brand: "waterguru"
price: "€ 10.40"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.ie/products/674051051-waterguru-sense-s2-smart-pool-monitor-digital-pool-and-spa
store_origin: IE
region: Ireland
---

# App-based real-time monitoring 1.5V battery powered, easy install Patented optical sensor tech WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries

**Brand:** waterguru
**Price:** € 10.40
**Availability:** ✅ In Stock

## Summary

> 💧 Dive into smart pool care—because your oasis deserves next-level precision!

## Quick Answers

- **What is this?** WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries by waterguru
- **How much does it cost?** € 10.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/674051051-waterguru-sense-s2-smart-pool-monitor-digital-pool-and-spa)

## 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

- • **Effortless Pool Mastery:** Automated daily chemical readings sent directly to your phone—ditch manual tests forever.
- • **Plug & Play Installation:** Mounts easily on your skimmer—no tools, no hassle, just instant pool insights.
- • **Precision Optical Sensing:** Patented laminated-glass sensor detects subtle water chemistry changes invisible to the naked eye.
- • **Smart Energy & Cost Saver:** Optimizes pool chemical use and energy bills by preventing over-treatment and guesswork.
- • **Comprehensive Chemical Tracking:** Monitors Free Chlorine, pH, Total Alkalinity, Cyanuric Acid, and Calcium Hardness for perfect balance.

## Overview

The WaterGuru Sense S2 is a smart pool monitor that uses patented optical sensor technology to provide daily, precise measurements of key pool water chemicals including Free Chlorine, pH, Total Alkalinity, Cyanuric Acid, and Calcium Hardness. It connects seamlessly to an app for real-time monitoring and expert advice, simplifying pool maintenance while saving energy and chemical costs. Designed for easy skimmer installation and powered by 1.5V alkaline batteries, it supports inground pools, hot tubs, and spas with saltwater compatibility.

## 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: Purchased my WaterGuru in 2024, and in December of 2025, it kept failing to measure. I contacted customer support and it turns out I had a bad motor on my unit. Joan was awesome and ended up sending me a new unit for no charge. I will admit, before the unit crapped out on me, WaterGuru has made it super easy to help maintain the proper chemicals in my pool year-round.
Review: More failed readings that successes. Was really hoping this would make water testing easier, but it's the opposite for me. The app looks nice, easy to start a reading. But having to wait 10-12 minutes only for it to tell me it failed, then have to wait for 5-10 minutes for the "failed" message to go away is just a big waste of my time. I now have to go check the device, see if there's debris, see if it's in water, all of the troubleshooting steps. Everything is always fine, it just fails. So now I have to pull out my test kit and do it manually anyways. Way too much money to make my process even more frustrating. They also charge $15 shipping for the cassettes. So sorry i bought this.

## 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 (159) |
| 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 – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries - Image 1](https://m.media-amazon.com/images/I/61QzVnQGWQL.jpg)
![WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries - Image 2](https://m.media-amazon.com/images/I/81CdjrZoFzL.jpg)
![WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries - Image 3](https://m.media-amazon.com/images/I/81BXgnF-f8L.jpg)
![WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries - Image 4](https://m.media-amazon.com/images/I/91Ox53Sep3L.jpg)
![WaterGuru Sense S2 Smart Pool Monitor – Digital Pool & Spa Water Tester for Chlorine, pH, CYA & Alkalinity – Wi-Fi Enabled – Includes C5 Cassette, Float Ring & Batteries - Image 5](https://m.media-amazon.com/images/I/71GLuLOv8dL.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 A***E on 28 December 2025*

Purchased my WaterGuru in 2024, and in December of 2025, it kept failing to measure. I contacted customer support and it turns out I had a bad motor on my unit. Joan was awesome and ended up sending me a new unit for no charge. I will admit, before the unit crapped out on me, WaterGuru has made it super easy to help maintain the proper chemicals in my pool year-round.

### ⭐ Review
*by D***O on 27 June 2025*

More failed readings that successes. Was really hoping this would make water testing easier, but it's the opposite for me. The app looks nice, easy to start a reading. But having to wait 10-12 minutes only for it to tell me it failed, then have to wait for 5-10 minutes for the "failed" message to go away is just a big waste of my time. I now have to go check the device, see if there's debris, see if it's in water, all of the troubleshooting steps. Everything is always fine, it just fails. So now I have to pull out my test kit and do it manually anyways. Way too much money to make my process even more frustrating. They also charge $15 shipping for the cassettes. So sorry i bought this.

### ⭐⭐⭐⭐⭐ Review
*by D***A on 29 January 2026*

I had the V1 of this and then later bought the V2 — and I love both. The updates are noticeable and it works even better this time around. Makes pool maintenance so much easier and less of a chore. Sturdy, reliable, and genuinely helpful to have around. Highly recommend if you want something that actually simplifies the job!

## 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 Ireland*
*Store origin: IE*
*Last updated: 2026-03-17*