Programmable meters with alarms warn of high or low humidity conditions in laboratories, storage areas, or other controlled environment settings Meter 89030-354 includes a remote probe that can clip onto the meter or extend on 45.7cm (18") cable, and a rear calibration adjustment pot for humidity and temperature. Optional humidity standards kit 89030-356 consists of salt bottles with 33% and 75% relative humidity standards for calibrating meter 89030-354. Large, easy-to-read triple LCD displays relative humidity, temperature, and dew point. Audible and visual alarms with adjustable set points alert user when the relative humidity exceeds the set limit. Meters also feature minimum/maximum with reset function.