• 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: • 1. Measure the current ambient light intensity: low, low+, mid, high-, high, high+ • 2. Measure soil moisture content: dry, dry+, wet, wet+ • 3. Soil temperature measurement: Temperature measurement range: -9 to +50°C (16 to 122°F) • 4. Measuring the pH value of the soil: pH measurement range: 3.5–9.0 Usage: • Step 1: Switch the humidity/temperature/light or pH/light position as needed. • Step 2: Insert the probe into about 2–4 inches of soil. • Step 3: Check the humidity/pH/light/temperature level in the display within 3 seconds. • Step 4: After each use, remove the probe from the ground and clean and wipe it. Specifications: • Size: 340 x 63 x 36mm • Probe length: 195mm • Battery: 9V battery (not included) Notes: • 1. Not suitable for liquid testing; for soil testing only. • 2. If the battery voltage drops below 2.9V, the screen may display green only with no numbers, indicating low battery. • 3. If the soil is too dry, moisten it slightly before testing. • 4. If the soil is very dry and compact, add a small amount of water, wait 30 minutes, then test again. Package included: • 1 x Tester