HOTOOK 5-in-1 Digital Tester Pen – Precision Water Analysis Made Simple

Multi-Functional Testing
– Accurately measures salinity, pH, temperature, EC, and TDS in one compact device, eliminating the need for multiple tools.
High-Precision Sensors
– Advanced digital sensors ensure reliable readings with ±0.01 pH and ±2% TDS accuracy for professional-grade water testing.
Durable & Portable Design
– Features a rugged ABS body with an ergonomic grip, waterproof casing, and a large LCD screen for easy readability in any condition.
Wide Application Range
– Ideal for testing drinking water, pools, aquariums, hydroponics, saltwater tanks, and industrial water systems.
Quick & Easy Calibration
– Includes automatic temperature compensation (ATC) and a simple one-button operation for hassle-free setup and instant results.
Long-Lasting Performance
– Powered by a replaceable battery with an auto-off function to conserve energy and extend lifespan.
Trusted for Professional & Home Use
– A must-have tool for water quality management, laboratory testing, agriculture, and household safety checks.