10 Best Sutro Pool Monitor Reviews of 2025

Tested and Reviewed: Top 10 Sutro Pool Monitor Reviews deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Crystal Water Monitor

Crystal Smart Water Monitor for Chlorine & Bromine Pools, Hot Tubs & Swim Spas - 24/7 Continuous Digital Water Testing with App Notifications & Customized Chemical Dosing (New Model)

Editor's bottom line:

“This sutro pool monitor reviews is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

SIMPLIFIED POOL & HOT TUB CARE: The Crystal Smart Water Monitor actively tests your pool or hot tub's water 1,000 times per week to give you personalized chemical recommendations that are much more reliable than any single point-in-time sample of water or a test strip reading. It's as simple as monitor, notify, and adjust.
AUTOMATIC NOTIFICATIONS: The Crystal Water Monitor app automatically alerts you when you need to adjust your chemicals and provides precise chemical dosing recommendations customized for your pool or hot tub. Works with both Android and iOS.
TAKES GUESSWORK OUT OF ADDING CHEMICALS: Scan your chemicals barcode once, and the Crystal Water Monitor app will customize your chemical dosing recommendations for your preferred chemical brand. Supports all major chemical brands.
SUPPORTS CHLORINE & BROMINE WATER TYPES: Works with chlorine and bromine pools, hot tubs and swim spas. Saltwater version also available.
THE CRYSTAL CLEAR CHOICE: While other smart monitors only sample your water once a day, Crystal continuously monitors it 144x a day providing the most accurate readings and dosing recommendations. Enjoy the freedom to use any of your preferred chemical brands instead of being forced to use proprietary ones. Say goodbye to expensive monthly replacement cartridge purchases competitive monitors require. Upgrade from confusing and inaccurate test strips with precise digital testing and save time constantly taking individual water samples to your pool store.
RELIABLE SERVICE & SUPPORT: Complimentary first-year service and US based customer support with your Crystal Water Monitor. Renew for $99/year thereafter to continue to receive ongoing notifications, chemical dosing, service, support, and free replacement parts.

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Picked by 397 people today

9.5

iopool

iopool Smart Water Monitor - Works for Chlorine & Bromine Pools, Hot Tubs, & Swim Spas - Gives Precise Dosage recommendations.

Main Highlights

Compatible with Chlorine, Bromine and Active Oxygen
Not Compatible with Salt water
Real-time analysis of your pool water. iopool advises you on the precise treatments to be carried out to have a safe and clear water continuously.
Guided pool care: iopool guides you through all the steps of the maintenance process to ensure safe and clear water for you and your family. You can also receive personalized alerts based on the actions to be taken.
App: Get access to the evolution of your water over time through the history feature. Share the iopool app with your neighbor when you are on vacation!
Eco Start pack: EcO probe + Bluetooth Wi-Fi Gateway + Unlimited and complete access to the app for life

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9.5

Crystal Water Monitor

Crystal Smart Water Monitor for Salt Water Pools & Hot Tubs - 24/7 Continuous Digital Water Testing with App Notifications & Customized Chemical Dosing (New Model)

Main Highlights

SIMPLIFIED POOL & HOT TUB CARE: The Crystal Smart Water Monitor actively tests your pool or hot tub's water 1,000 times per week to give you personalized chemical recommendations that are much more reliable than any single point-in-time sample of water or a test strip reading. It's as simple as monitor, notify, and adjust.
AUTOMATIC NOTIFICATIONS: The Crystal Water Monitor app automatically alerts you when you need to adjust your chemicals and provides precise chemical dosing recommendations customized for your pool or hot tub. Works with both Android and iOS.
TAKES GUESSWORK OUT OF ADDING CHEMICALS: Scan your chemicals barcode once, and the Crystal Water Monitor app will customize your chemical dosing recommendations for your preferred chemical brand. Supports all major chemical brands.
SUPPORTS SALTWATER TYPES: Works with saltwater pools, hot tubs and swim spas. Chlorine/bromine version also available.
THE CRYSTAL CLEAR CHOICE: While other smart monitors only sample your water once a day, Crystal continuously monitors it 144x a day providing the most accurate readings and dosing recommendations. Enjoy the freedom to use any of your preferred chemical brands instead of being forced to use proprietary ones. Say goodbye to expensive monthly replacement cartridge purchases competitive monitors require. Upgrade from confusing and inaccurate test strips with precise digital testing and save time constantly taking individual water samples to your pool store.
RELIABLE SERVICE & SUPPORT: Complimentary first-year service and US based customer support with your Crystal Water Monitor. Renew for $99/year thereafter to continue to receive ongoing notifications, chemical dosing, service, support, and free replacement parts.

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9.2

DANOPLUS

6-in-1 Wireless Water Quality Tester Bluetooth Floating Water Quality Monitor for Pools, Spas, and Hydroponics - pH, EC, ORP, Chlorine, Salinity, and Temperature Measurement

Main Highlights

Comprehensive Water Testing: This water quality monitor combines six essential functions - pH, EC, ORP, Chlorine, Salinity, and Temperature measurement - providing a comprehensive analysis of your pool, spa, or hydroponic system's water quality
Seamless Bluetooth Connectivity: Connect the monitor to your iOS or Android device via Bluetooth for convenient real-time monitoring, data transfer, and analysis through the free app. Stay informed about your water parameters anytime, anywhere. Before using Bluetooth, please enable location services to ensure the proper functioning of the Bluetooth feature
Data Logging and Memory Storage: With a data memory storage capacity of up to 1000 records, this monitor allows you to track and analyze historical water parameter data over time. Easily monitor changes and trends in water quality for effective maintenance and treatment
User-Friendly Design: The floating device is designed to stay buoyant on the water's surface, ensuring continuous monitoring without sinking or submerging. It features a backlight function for easy reading in low-light environments and a selectable temperature unit for your convenience (°C / °F)
Customizable Alerts and Notifications: Set maximum and minimum limit values for pH, EC, ORP, and Chlorine, and receive alerts and notifications on your connected device when the values exceed or fall below the desired range. Keep your water quality in check effortlessly
Instruction To Use: Download the "YINMIK" app, turn on the meter, and place the electrode into the solution. Wait for the reading to stabilize and switch between measurement modes (pH, SALT, EC, CL, ORP)
Important: After replacing the battery, please close the battery cover tightly to avoid water ingress into the device

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Best Value

9.0

Save 23%

RoamRider

Pool Alarm with Remote Receiver, Pool Underwater Drown Monitor System, Battery Powered Poolside Alarms for Inground&Above Ground Pools, Kids Child Pets Swimming Pool Safety Guard fits up to 16x32sq.ft

23% Off

Main Highlights

2 INSTALLION METHOD: Our pool alarm offer dual installation options: 1) Permanent screw mount (drilling required) for concrete/above-ground pools, or 2) Tool-free 3M adhesive tape for smooth surfaces - no drilling needed. Compatible with all pool types.
MOTION SENSING SYSTEM: Our pool alarm system boasts an advanced motion sensing mechanism, swiftly detecting any movement in the pool area. This ensures that you receive timely alerts, enabling you to take immediate action and maintain a safe environment around your pool.
FLASHING RECEIVER ALARMThe receiver of the immersion-mountable pool alarm emits audible alerts accompanied by LED flashing when children or pets accidentally fall into the swimming pool or pond. An 85 dB alarm will sound upon detecting an object weighing over 13 pounds falling into the pool. PLEASE CONDUCT AN ALARM TEST AFTER INSTALLATION!
ADAPTATION POOL TYPEThis poolside alarm is suitable for both inground pool and above ground pool.The poolside unit is suggested to be installed in the pool less than or equal to 16x32sq.ft. And be sure it is installed at the proper place. The tube should be submerged under the water surface about 3.9".
VERSATILE MODES: Yellow for sleep or swimming, green for operational readiness, and flashing red for alarm activation. With audio prompts for status changes, it's perfect for swimming pools, spas, and garden ponds. Dive into worry-free swimming knowing you've got the ultimate safety solution!

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8.8

EIIDAR

EIIDAR Swimming Pool Alarm，Pool Safety Alarm System，Floating Solar Wave Alarm Can Monitor Swimming Pools，Suitable for Indoor and Outdoor Swimming Pools, Suitable for Protecting The Safety of Family.

Main Highlights

ELIMINATE WORRIESSwimming Pool Alarm can effectively solve your concerns about the safety of your swimming pool at home, constantly worrying about the possibility of your child or pet accidentally falling into the water. Therefore, EIIDAR Swimming Pool Alarm will be your first choice. The alarm will continuously monitor the water surface and issue a loud alert when children and pets fall into the water to alleviate your concerns.
WIDELY APPLICABLE SCENARIOSEIIDAR Swimming Pool Alarm utilizes cutting-edge innovative technology to guarantee your safety in all types of swimming pools, including above-ground pools, underground pools, spa centers, ornamental pools, as well as swimming pool alarms for constructed or temporary pools.
TWO MODESWe have designed two modes of swimming and working to meet your diverse needs. Turning on the working mode of the swimming pool safety alarm system will automatically monitor water surface fluctuations and sound an alarm when the water surface fluctuates violently. Turning on the swimming mode will not sound the alarm - allowing you to swim and enjoy a wonderful swimming time.
SOLAR POWEREDWe have introduced a new solar charging method that does not require frequent battery replacement. The low battery indicator light on the receiver notifies you of the power status at any time. In addition, the alarm has a high-strength waterproof rating, ensuring the durability of the equipment and saving you time and money to the greatest extent possible.
ACCURATE ALERTWe have installed motion detection sensors at the bottom of the swimming pool alarm, which will trigger the alarm when children or pets fall into the water.It can easily detect movement in the swimming pool. It is a very good pool alarm for families.

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8.6

Save 8%

IC ICLOVER

IC ICLOVER Pool Alarm with Remote Receiver, Immersion Drown Monitor System, Poolside Alarms for Inground & Above Ground Pools, Wireless Swimming Pool Water Motion Sensor Kids Toddler Pets Safety Guard

8% Off

Main Highlights

Water Motion Sensor & Receiver - The poolside motion sensor detects water surface fluctuations, triggering the remote receiver to sound a critical alarm in the event of a child drowning in the swimming pool. The alarm prompts immediate rescue action with a rapid response time.
Wireless Flashing Receiver Alarm - The receiver alarm will give out sounds with LED flashing at the same time when children or pets fall into the pool or pond. The 85 dB alarm will be triggered when a over 13-lb-weight object is detected. Must test the alarm after installation.
4 WORKING MODES - 4 different modes: Surveillance, Swimming, Mute, and Off. Press the button and move to change its working state. This design prevents accidental touches and is suitable for a wider range of scenarios.
2 INSTALL METHOD - Method #1: Punch holes at the edge of the pool and secure with screws. Method #2: Use strong double-sided adhesive to secure it to the edge of the pool. (All installation accessories are included in the package)
Adaptation Pool Type - This poolside alarm is suitable for inground & above ground pool. The poolside unit is suggested to be installed in the pool less than or equal to 16x32sq.ft. The tube should be submerged under the water surface about 3.9".
Not A Life-saving Device - Pool Alarm is just a pool safety alarm system, but not a life-saving device! Any safety consideration such as adult supervision, lifeguards or fences should not be replaced!

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Our Best Overall Choice

Best Choice

9.7

Crystal Water Monitor

Crystal Smart Water Monitor for Chlorine & Bromine Pools, Hot Tubs & Swim Spas - 24/7 Continuous Digital Water Testing with App Notifications & Customized Chemical Dosing (New Model)

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

SIMPLIFIED POOL & HOT TUB CARE: The Crystal Smart Water Monitor actively tests your pool or hot tub's water 1,000 times per week to give you personalized chemical recommendations that are much more reliable than any single point-in-time sample of water or a test strip reading. It's as simple as monitor, notify, and adjust.
AUTOMATIC NOTIFICATIONS: The Crystal Water Monitor app automatically alerts you when you need to adjust your chemicals and provides precise chemical dosing recommendations customized for your pool or hot tub. Works with both Android and iOS.
TAKES GUESSWORK OUT OF ADDING CHEMICALS: Scan your chemicals barcode once, and the Crystal Water Monitor app will customize your chemical dosing recommendations for your preferred chemical brand. Supports all major chemical brands.
SUPPORTS CHLORINE & BROMINE WATER TYPES: Works with chlorine and bromine pools, hot tubs and swim spas. Saltwater version also available.
THE CRYSTAL CLEAR CHOICE: While other smart monitors only sample your water once a day, Crystal continuously monitors it 144x a day providing the most accurate readings and dosing recommendations. Enjoy the freedom to use any of your preferred chemical brands instead of being forced to use proprietary ones. Say goodbye to expensive monthly replacement cartridge purchases competitive monitors require. Upgrade from confusing and inaccurate test strips with precise digital testing and save time constantly taking individual water samples to your pool store.
RELIABLE SERVICE & SUPPORT: Complimentary first-year service and US based customer support with your Crystal Water Monitor. Renew for $99/year thereafter to continue to receive ongoing notifications, chemical dosing, service, support, and free replacement parts.

Show Price

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