Non-Smart Device with Backlight: While this is not a smart device, it features a user-friendly backlight for easy reading in low-light conditions, making it practical for both indoor and outdoor use. Battery Not Included: This device does not come with a battery, ensuring you can choose the optimal battery type for your specific needs, whether for prolonged use in remote locations or for reliable performance in controlled environments. Model and Assurance: Model PH-61181 by JUANJUAN comes with CE certification, ensuring compliance with European safety standards and reliability in its performance. No Harmful Chemicals: Certified to be free from high-concern chemicals, this meter offers a safe and environmentally friendly option for monitoring water quality in sensitive environments such as aquariums and swimming pools. and Display: Proudly manufactured in with a digital display that provides clear and precise readings, this meter is an essential tool for anyone needing accurate pH and temperature measurements., Manufacturer: Akfldms