This moisture meter provides information necessary to ensure baling and curing don''t result in fungal damage or fire hazards. Built-in calibration check confirms readings are accurate. Order electrode and handle separately. Don't let your crop spoil Dual-range program measures moisture content of hops and alfalfa hay. Stores up to 100 readings and calculates the average for your convenience. Audible alarm warns you when the moisture content is higher than the set point.