• The large number display screen is clear at a glance. • Quick measurement within 3 seconds. • Humanized design, durable quality, easy to carry. • Four modes: one-key switching, sensitive detection, accurate measurement of different types of readings. Four Functions: • Measure the current ambient light intensity: low, low+, mid, high-, high, high+ • Measure soil moisture content: dry, dry+, moist, wet, wet+ • Soil temperature measurement: Temperature measurement range: -9 to +50℃ (16 to 122℉) • Measure the pH value of the soil: pH measurement range: 3.5 to 9.0 Usage: • Step 1: Switch to humidity/temperature/light or pH/light mode as needed. • Step 2: Insert the probe into about 2-4 inches of soil. • Step 3: Read the humidity/pH/light/temperature level on the display within 3 seconds. • Step 4: After each use, remove the probe from the soil and clean it thoroughly. Specifications: • Size: 340 x 63 x 36mm • Probe length: 195mm • Battery: 9V battery (not included) Notes: • Not suitable for liquid testing; intended for soil testing only. • When the battery voltage drops below 2.9V, the screen may display only green with no numbers, indicating low battery. • If the soil is too dry, lightly moisten it before testing. • For very dry or compacted soil, add a small amount of water, wait 30 minutes, then test again. Package included: • 1 x Tester