Amp -Soil Hygrometer Highlights Generic Brand Soil Hygrometer Description: This is a moisture sensor that can be used to detect soil moisture, when the soil is dry, the module outputs a high level, while the output is low. Using this sensor makes an automatic watering system, so your garden plants don't need anyone to manage. Use high quality relay, which can withstand 1500W and meet most people's requirements. With timing function about 3-5 seconds. Supply voltage: 12V DC Input Curren: More than 100ma Load: 250V 10A AC or 30V 10A DC (suitable for any current less than this current) specification: Material: plastic + electronic components Size: approx. 4.9 x 2.6 x 1.7cm / 1.9 x 1 x 0.7in Sensor Size: Approx. 6.5 x 2 x 0.5cm/2.6 x 0.8 x 0.2inch Cable length: 20cm/7.9inch Package includes: 1 Piece Soil Hygrometer Detection Module 1 Moisture Sensor soil moisture Jumper cables 2 pieces