XIANQI 3 in 1 pH Meter: With this soil pH meter, youll find out whether your plants need water or not. Youll also measure the pH of your soil and the strength of the light your plants are getting. Let your plants thrive! Double-needle Detection: Double-needle detection technology strongly enhances the and accuracy of detecting and analyzing soil moisture and pH acidity, promotes plant growth in a healthy way. Wide Use: Ideal soil test tool kit with moisture meter light meter ph meter for home plants, garden, lawn, and farm. Suitable for home gardening, rice planting, vegetable planting, planting, succulent soil, etc. Easy to Operate: No batteries needed, just insert the sensor probe into the soil about 2-4inches, toggle switch to test moisture, pH, sunlight you would like to measure, then wait for a few minutes till the pointer stops swinging to get a stable reading on the scale dial. Kindly Reminder: 1. Do not touch the stone or hard rock soil, if the soil is too hard and dry, easy to damage the probes. 2. Designed for testing soil ONLY, NOT for WATER or other liquids. 3. After using, need to clean and wipe the probes. Color: white Products include: 1pc Size: about 33*10.5*4.5cm/12.99*4.13*1.77in