KINCREA 3 in 1 Soil Moisture Moisture Meter, Light and PH Acidity Tester for Plant Care, Soil Hygrometer Water Monitor… Price: $14.99 (as of 05/10/2022 17:46 PST- Details)

Simple and Effective: No batteries required, just plug the meter probe into soil, get reading soon. 7 inch metal probe measures moisture at root level, 10 scales display to indicate soil moisture.
Indoor and Outdoor Use: Soil moisture meter can prevent over and under watering. A must gardening tool to ensure healthy outdoor & indoor plants, vegetables, gardens and lawn etc.
Sensitive Accurate Monitor: Good sensibility and durability, this hygrometer with probe clearly displays soil moisture value, great reading accuracy, promotes healthy plants.