4-in-1 Waterproof pH ORP H2 Temp Meter

This compact digital tester measures pH, ORP (oxidation-reduction potential), dissolved hydrogen (H₂), and temperature in one device. Dimensions: 183 × 37 × 37 mm (7.2 × 1.5 × 1.5 inches); weight: 90 g; LCD screen size: 33 × 24 mm. Built with durable composite material and rated IP67 waterproof for reliable use around pools, spas and laboratories. Features automatic temperature compensation across 0–60°C, operates in environments from 0–60°C (32–140°F) at up to 100% relative humidity. Includes auto-shutdown after 5 minutes and data retention to hold the last measured value. Powered by three LR44 batteries (not included). Backlit display ensures readability in low-light poolside or indoor conditions.