used the company produces high quality soil sensor detection of soil moisture surface plating handle have widened the induction area can increase conductivity protection from exposure to rust problems of soil longer service life;</br>the product is wide-range control of soil humidity by adjusting potentiometer control the appropriate threshold when the humidity drops below a set value start the relay sucks and shuts the higher than the set value the relay disconnects;</br>products with the time delay function delay 3-5 second when humidity is detected when in a critical state the relay will not Flash strobe behavior occurs;</br>adopt songle relay can withstand a 1500W load meet the requirements of most people;</br>the product with power supply and relay sucks and shuts the instructions.</br></br>Product Description</br></br><b>Specification:</b><br> Through potentiometer regulation soil humidity control valve value can automatically on Garden Garden automatically watering family pot soil humidity of control various electronic competition with high power following electric?? can control big current device?? is less than set humidity automatically started following electric sucking-in?? is greater than set humidity automatically disconnect?? and has delay function?? solve no delay of humidity critical state following electric kept of flashing of problem?? is a simple practical of soil humidity control system.<br> <br> <b>Electrical parameters:</b><br> Supply voltage: 12VDC input current: more than 100mA<br> Load 250V A