Digital pool tester - pH and chlorine measuring device for easy water analysis
Digital 7-in-1 smart water quality tester with mobile app support
A compact electronic water testing device designed to monitor pool or spa water conditions. This 7-in-1 tester delivers real-time data for pH, temperature, conductivity, TDS, salinity, ORP, and specific gravity—helping ensure safe, balanced water every day.
All-in-one water analysis in real time
The built-in sensor measures seven key metrics in a single unit. These include water temperature, pH, ORP (oxidation-reduction potential), EC (electrical conductivity), TDS (total dissolved solids), salt levels, and specific gravity. Ideal for residential pools, spas, or aquaculture.
Mobile app connectivity for remote updates
Connect the tester to your smartphone via the free mobile app (iOS and Android supported). The app provides real-time readings, historical data, and alerts when values are outside safe limits. Enables remote monitoring and fast adjustment without manual test strips.

Accurate readings with digital LCD display
The device includes a backlit LCD screen for immediate readout. Auto temperature compensation ensures accuracy in changing weather. Only the probe is submerged during use. Compact size supports portability and regular testing throughout the season.
Durable and easy to operate
Powered by three LR44 batteries, the tester is designed for extended field use. The interface is simple, and readings stabilize quickly. Its lightweight construction and protective body allow safe storage in toolkits or poolside boxes.
Product specifications
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Measurement functions: pH, ORP, EC, TDS, Salt Level, Specific Gravity, Temperature
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pH range: 0.00–14.00 (±0.5 pH)
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Temperature: 31.2–140.0°F (±0.9°F)
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Conductivity (EC): Up to 400.0 mS/cm (±2% F.E.)
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TDS: Up to 200.0 ppt (±2% F.E.)
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ORP: ±999 mV (±2 mV)
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Salt Level: 0–10,000 ppm (±2% F.E.)
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Specific Gravity: 1.000–1.222
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Display: Digital LCD
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Power: 3 × 1.5V LR44 batteries
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Dimensions: Approx. 7.4 × 1.5 × 1.5 in
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Weight: Approx. 0.21 lb
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Temperature compensation: 32–140°F (0–60°C)
What’s included
7-in-1 Smart Water Quality Tester
Frequently Asked Questions
Can I use this for both pools and spas?
Yes, it is designed for use in pools, hot tubs, spas, and similar water systems.
Does it require calibration?
Yes, calibration is recommended for best accuracy, especially before the first use or after extended storage.
How do I view results remotely?
Download the app from the App Store or Google Play, connect the tester via Bluetooth, and access readings in real time.
Can it be fully submerged in water?
No, only the probe should be submerged. Do not immerse the full device.
Return policy
30-Day Money-Back Guarantee
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Free Premium Shipping
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Contact
If you have any questions or need assistance, our customer support team is happy to help.
Email: info@zendralight.com
Phone Number: + 1 857 7587183
Customer Service Hours:
Monday to Friday, 9:00 AM – 6:00 PM (GMT-5)
We aim to respond to all inquiries within 1–2 business days.
For full business details, please visit our Contact Us page.