Easy to use, just turn on the pH meter and gently stir the water. Then a stable reading will appear on the LCD within a few seconds. A multifunctional water quality pen that can measure pH and ORP temperature of 3 in 1 function water quality test pen. Widely used for testing water, swimming pool, spa, hydroponic, food, wine and beer, etc. If there is no operation for more than 5 minutes, the meter will turn off automatically. This product has high performance, pen-shaped design, fast numerical stability and accurate calculation results. Features: 1. A multifunctional water quality pen that can measure pH and ORP temperature of 3 in 1 waterproof function water quality test pen. 2. This product has high performance, pen-shaped design, fast numerical stability, and accurate calculation results. 3. Widely used for testing water, swimming pool, spa, hydroponic, food, wine and beer, etc. 4. Easy to use, just turn on the pH meter and gently stir the water. Then, within a few seconds, a stable display will appear on the LCD. 5. If there is no operation for more than 5 minutes, the meter will turn off automatically. Specifications: Item Type: 3-in-1 Test Pen. Material: Plastic. Product model: YY-600 pH range: 0.01-14.00pH. Measurement accuracy: 0.01pH . ORP measurement range: -999~999mV. Measurement accuracy: 1mV. Measurement temperature: 0.1-60C. Measuring accuracy: 1 /. Battery: 3 x 1.5V (LR44) (without) Display: LCD digital display. Backlight: Yes. Auto power off: 5 minutes. Application: Hospital, swimming pool, aquatic plant laboratory.