<p>Description: 1. and portable,</p> <p>2. Accurately measure water to protect the drinking water health of the whole family.</p> <p>3. Multi-function switch at will</p> <p>4. Dust-proof and splash-proof design: meet IP67 waterproof level</p> <p>5. LCD backlit screen makes clear reading easier. Built-in high-sensitivity electrode head, high-sensitivity glass electrode, rust-proof electrode</p> <p>Specification:</p> <p>Product name: 7 in 1 water quality test pen</p> <p>Measuring range: PH\/ORP\/EC\/TEMP\/SALT\/S.G\/TDS</p> <p>Product size: 185 x 37 x 24mm</p> <p>Battery: 3*1.5V button battery</p> <p>Product measurement range:</p> <p>1. PH value 0-14</p> <p>2, TDS value 0-200000ppm</p> <p>3. EC value 0-200000\/cm</p> <p>4. Salinity 0-20%</p> <p>5. ORP negative potential 1999MV</p> <p>6. H2 hydrogen rich 0-2400PPb</p> <p>7. The specific gravity of S.G seawater is 1.000-1.222</p> <p>8. Temperature 0-60</p> <p>Material: ABS</p> <p>colour: white+blue</p> <p>Package Contents:</p> <p>1 x 7-in-1 water quality pen</p> <p>1 x English manul</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>