RHP is designed to convert moisture content of bulk materials into standard voltage signal. The probe is especially suitable for fast measurements in combination with COMECOs handheld moisture meter model H5850, but may be used with other moisture measurement devices that feature a programmable or scalable input. Employing the variation of material dielectric constant caused by moisture variation, RHP converts the capacitance of the system formed by the material and the measurement cell into electrical signal proportional to material moisture. Furthermore, a temperature sensor may be built in for simultaneous material temperature measurement. Through its flexible cable with miniature connector, this moisture probe can be connected to a H5850 meter to form a lightweight and convenient multifunctional device for handheld moisture measurement of bulk materials such as grain, powder, wheat, granules, sand-like materials, etc.