Model FC-28-J Quantity 1 Color Blue Material PCB Features Nickel plating widen sensor area high electric conduction performance anti-rust. Wide range detection relay closing when the soil humidity higher than setting value and break when lower than setting value. With delay function delay time: 3~5s when humidity value reach critical point relay shows flash strobe. With power indicator and indication of relay close. Specification Power supply: DC 12V input current > 50mA Application Widely use in garden household flowerpot etc. Great for Arduino DIY. English Manual/Spec Yes Packing List 1 x Soil humidity sensor module 1 x Soil sensor 2 x Dupont cables (20cm)