Model FC-28-G Quantity 1 Color Blue Material PCB board Features Nickel plated appearance w/ widen sensor area improving conducting performance and avoiding rust by staying in soil; It will auto-alarm if the humidity of soil is lower that set humidity; W/ power and buzzer alarm indicator Specification Voltage: 5V DC; Current: >50mA Application Can auto water vegetables and garden and monitor soil humidity of flower pot by adjusting soil humidity and controlling threshold values; W/ alarm extending function; Simple and practical Packing List 1 x Alarm module 1 x Soil sensor 2 x Dupont cable (20cm)