Convenient triple memories recall minimum/maximum readouts for relative humidity, dew point, and temperature.

Simultaneously displays all three current readings. Always-on feature allows for monitoring conditions all night, over weekends, and for extended time periods. Audible and visual LED alarm may be set to trigger at three different humidity readings (55%, 60% or 65%). Solid state sensors deliver response times of less than 30 seconds. Oversized display supplies updates once a second.