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7-Parameter Electronic Pool & Spa Water Quality Monitor with Backlit Display & Smartphone Connectivity for pH, Chlorine, Salinity Testing | Thomler
Keep Your Pool Perfectly Balanced With Lab-Grade Precision
Managing water chemistry has never been easier. This handheld electronic water analyzer gives you instant readings for seven critical parameters—pH balance, oxidation potential, conductivity, dissolved solids, salt concentration, specific gravity, and temperature—all from a single probe. Whether you're maintaining a backyard pool, hot tub, or koi pond, you'll know exactly what your water needs in seconds. The built-in backlit screen displays results clearly even in low light, while the companion app for iPhone and Android lets you track trends over time and receive maintenance reminders. Automatic temperature calibration ensures your measurements stay accurate whether you're testing in summer heat or cooler spring conditions, so you can trust every reading.

Why You Need This
- Seven Parameters in One Device: Eliminates the need for multiple test strips or liquid kits—you get pH, oxidation-reduction potential, electrical conductivity, total dissolved solids, salt level, specific gravity, and water temperature all at once.
- Real-Time Smartphone Alerts: The free mobile app syncs via Bluetooth to log your data automatically and notify you when levels drift outside safe ranges.
- Lab-Accurate Results in Seconds: Professional-grade sensors deliver precision readings you can rely on, so you add the right amount of chemicals the first time.
- Backlit Screen for Any Lighting: Test poolside at dusk or in dim spa rooms without squinting—the bright digital display is always easy to read.
- Lightweight & Portable: Weighing just over 3 ounces and measuring under 8 inches long, it fits in your pool maintenance caddy or even a shirt pocket.
- Auto Temperature Correction: Built-in compensation adjusts readings for water temperature fluctuations, ensuring consistency from test to test.
Made For Everyday Pool Care
Designed with both homeowners and professionals in mind, this electronic tester simplifies routine water maintenance. The durable plastic housing resists splashes and chemical exposure, while the replaceable electrode tips extend the life of your investment. Simply rinse the probe after each use and store it in the protective cap—no reagents to expire, no color charts to interpret. Whether you're balancing alkalinity before a weekend pool party or monitoring salinity in your saltwater system, you'll have reliable data at your fingertips. And because it runs on three standard button-cell batteries (included), you're always ready to test. Every Thomler order ships free within the United States, and our 30-day return policy means you can try it risk-free to see how much simpler water care becomes.
Free shipping across the United States — always, with no minimum order.
Every order is carefully packed and sent with Track & Trace, so you can follow your package every step of the way.
Order today? We ship the next business day.
Not completely happy? You have 30 days to return your purchase.
On top of that, we offer a 3-year warranty against manufacturing defects — your investment is in good hands.
Made for everyday
Practical pieces you’ll actually use.
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- Hand-packed with care
- Checked before it ships
- Arrives exactly as pictured
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A Note From Our Founder
When I started Thomler, I wanted one thing — to make it easy to find pieces that actually make a home feel like yours, without the markup. Every item we carry is one I'd happily put in my own home. And if it's ever not right, you've got 30 days to send it back, no stress. I'm only ever an email away.