Features The EC value and TEMP value can be displayed on the LCD screen at the same time for easy reading, with a ℃/℉ switch button. EC‑315 soil tester, helps you understand the EC value of soil, soil moisture, nutrient, and nutrient solution, which is convenient and fast. Soil electrical conductivity is an indicator for determining soil water soluble salt, and it is a factor to determine whether salt ions in the soil restrict crop growth. Wide measuring range, high measuring accuracy, small error, good stability, with automatic temperature compensation function. Different plants have different suitable soil EC according to different fertilizer characteristics and growth stages, generally between 0.4‑1ms/cm. The higher the EC value, the higher the salt content. Note: Conductivity value, 1ms=1000us. Specification: Item Type: EC TEMP Meter Material: ABS+Metal Model: EC-315 Battery: 1.5V 4 x LR44 Battery (Battery Not Included) Uses: Crops, Gardens, Orchards Basic Parameters: Range: EC: 0.00-4.00mS/cm Temp: 0℃-50℃ (32℉-122℉) Accurate Value: EC: 0.01mS/cm Temp: 0.1℃ Accuracy: ±2%F.S ±1℃ (±2℉) Ambient Temperature: 0℃-50℃ (32℉-122℉) Working Temperature: 0℃-50℃ (32℉-122℉) Package List: 1 x EC Meter (Battery Not Included) 1 x Screwdriver 1 x Manual  1 x Plastic Shell 1 x Test Head Protective Shell Package List 1 x EC Meter (Battery Not Included) 1 x Screwdriver 1 x Manual 1 x Plastic Shell 1 x Test Head Protective Shell