XLUX T50 4-in-1 Multi-functional Soil pH Sensor Meter, Moisture Temperature Monitor, Hydrometer for Gardening, Farming, Indoor/Outdoor Use -4-IN-1: Measures moisture, PH value, temperature and sunlight intensity -EASY TO READ: large LCD screen. LED backlight for night visibility -Auto-off function to conserve battery (included) -Long probe for deep use (20cm/8)