à¤Ã×èͧÇÑ´¤ÇÒÁª×é¹´Ô¹ Digital Soil Moisture Pen - LUPMS714 Probe your soil (or similar material) with the simple-to-use Digital Soil Moisture Pen – LUPMS714. The pen has a large 1.25” digital display that enables highly accurate, high resolution readings. It also features a hold and min-max function, and indicates when the batteries need to be replaced. Simply insert the 9” long probe into the soil to test moisture content at the plant root level were it counts most. The large 1 ¼” digital display enables highly accurate, high resolution results. Also features hold and min-max functions and indicates when the batteries need to be replaced. The easily portable and durable water resistant ABS-plastic housing measures 7” x 1½” x 1½” (175 x 40 x 40mm) and the probe 9” x ½” (225 x 10 mm). Weighs 8½oz (240g). Comes ready to use in a protective foam lined case with 4-AAA batteries and instructions. Specifications Range Resolution Accuracy 0~50% moisture content in soil 0.1% ±(5% + 5d)F.S. @23ºC ± 5ºC à¤Ã×èͧÇÑ´¤ÇÒÁª×é¹´Ô¹ Digital Soil Moisture Pen - LUPMS714