ORP-969 Pen Type Redox Meter, Portable ORP Tester, Instant Digital Water Quality Tester, for Aquarium, Hydroponics, Spa, Swimming Pool

• Backlit LCD Display The portable ORP tester pen features a clear LCD with backlight, which is convenient and easy to read.
• Easy to use. The digital water quality test pen is easy to use and displays the results immediately.
• CONVENIENT The redox meter is suitable for water sources, aquariums, hydroponics, baths, swimming pools and other water systems.
• Feature: The pool water tester adopts compact and portable pen design, easy to carry and store.
• Application: The pen redox meter is used to measure the redox potential (ORP).

Specification: Range: -1999 mV - 1999 mV Resolution: 1 mV Accuracy: ± 5mV Working Temperature: 0° C-50° C (32° F-122°F) Battery: 2 × 3 V (CR1632) button battery (not included). Package list: 1 x installation tool set. 1 x instructions.