<p>4-in-1 combined pH-meter, luxmeter, thermometer and humidity measuring instrument.</p><br/><ul><br/><li>Application: indoor / outdoor</li><br/><li>Power Supply: battery 9V (not included)</li><br/><li>Soil Moisture (5 levels): DRY + / DRY / NOR / WET / WET +</li><br/><li>pH: from 3,5 to 8</li><br/><li>Sunlight Instensity (9 levels): LOW - / HIGH +</li><br/><li>Temperature: - 9 / + 50 &deg;C or 16 to 122&deg;F</li><br/></ul>