4-in-1 Color Screen pH Meter
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This 4-in-1 water quality test pen measures pH, EC, TDS, and temperature through a single device with a color LCD screen, making it a versatile tool for a wide range of water testing applications. It offers NFC connectivity for app integration and supports multiple use cases including hydroponics, swimming pools, drinking water, and brewing. Overall, it provides solid functionality and convenience for hobbyists and enthusiasts who need reliable multi-parameter water monitoring without carrying separate devices.
Key Features & Specs
| Measurements | Simultaneously tests pH, EC (electrical conductivity), TDS (total dissolved solids), and water temperature |
|---|---|
| Display | Color LCD screen showing all four readings clearly at once |
| Connectivity | NFC-enabled for pairing with a smartphone app for data logging and monitoring |
| Compatibility | Suitable for hydroponics, DWC, swimming pools, hot tubs, drinking water, brewing, and fermentation |
| Form Factor | Compact pen-style design for easy handheld use and portability |
| Calibration | Supports manual calibration for accurate and repeatable pH and EC/TDS readings |
| Power | Battery-powered for cordless, portable use in and around water systems |
Best for: Hydroponic growers, home brewers, pool owners, and water quality enthusiasts who want an all-in-one, easy-to-use meter that replaces multiple separate testing tools.