[" and high quality Features: Soil salt sensor is a good helper for gardening. It can test the temperature/humidity/conductivity of the soil. Upgraded three needle detection technology greatly improves the speed and accuracy of detecting and analyzing soil moisture and conductivity. Corrosion resistant probe: Waterproof sensor probe with high corrosion resistance can ensure a long service life. Application: A good helper for plants, let you know if your plants are thirsty, can be used in automatic watering systems, gardens, greenhouse vegetable growing, etc. Specifications: Product name: Three-in-one Soil Detector Power supply: for DC 12-24V Measuring range: 0-10000us/for cm Resolution: 10us/for cm Storage environment: -45C-115C Response time: