General description This Soil Moisture Meter is designed to help you maintain the perfect watering schedule for your plants. Most potted plant deaths are caused by either water shortage or excessive watering. This charming soil humidity sensor emits sounds to alert you when the soil is dry, ensuring your plants receive the right amount of water without the guesswork. Technical specifications Color: Yellow Material: Resin Size: 18 cm x 9 cm Measurement allowed error: +/- 1-3 cm Battery: Standard size button battery Usage To activate, simply pull out the plastic sheet at the bottom. Insert the sensor into the soil; it will emit sounds when the soil is dry. The sensor stops singing when moisture is detected. To turn off the singing function, press both probes simultaneously or insert them into the wettest soil. Watering is required every 15 seconds when the sensor is singing. Regularly clean the tip of the probe with fine abrasive paper or steel wool. The pH value of indoor plants should