Features: 1. Equipped with a large LCD screen with backlight, the EC test pen can be used at night without being affected by the dim environment. 2. With automatic temperature compensation function, the accuracy is higher, and the test is more convenient and faster. 3. It is easy to use, does not require frequent adjustments, and is extremely stable, suitable for aquaculture, agriculture, etc. 4. The hydroponic analyzer is small in size, light in weight, easy to carry, and can be placed in your bag for easy storage. 5. After installing the battery, turn on the switch and put the monitoring head into the monitored liquid to display the value. Specification: Item Type: Hydroponic Analyzer Material: Plastic Weight: Approx. 115g / 4.1oz Range: 0.00~1999us/Cm Resolution: 1us/Cm Accuracy: ±2%F.S Battery: 4 x 1.5V Button Battery (Battery Not Included) Temperature Compensation: 0℃~50℃ Working Temperature: 0℃~50℃ Product Size: Approx. 151x33x20mm / 5.9x1.3x0.8in Package List: 1 x Hydroponic Analyzer (Battery Not Included) 1 x Screwdriver 1 x Manual Features Convenient LCD Display: Equipped with a large LCD screen with backlight, our hydroponic analyzer allows for easy reading and usability even in dimly lit environments. Accurate Automatic Temperature Compensation: Our EC test pen Features automatic temperature compensation, ensuring higher accuracy and faster testing results. Stable and Reliable: Designed for ease of use, our hydroponic analyzer requires minimal adjustments and offers exceptional stability, making it suitable for various applications including aquaculture and agriculture. Compact and Portable: With its small size and lightweight design, our hydroponic analyzer is easy to carry and can be conveniently stored in your bag. User-Friendly Operation: Simply install the battery, switch on the device, and immerse the monitoring head into the liquid to display the value. Enjoy hassle-free testing with our hydroponic analyzer.