HD208 - Compact Data Logger: Monitoring Temperature, RH and Dew Point The data loggers of the series HD208 are compact instruments for monitoring temperature, relative humidity (RH) and dew point temperature. Usable in a wide spectrum of applications, are available in various models (with or without LCD display): • with 1 channel for temperature only (depending on the model, the sensor can be internal, external fixed or external with cable). • with 1 channel for temperature and relative humidity (combined probe fixed or with cable). • with 2 channels for temperature only (one external sensor with cable and one internal sensor). • with 2 channels: one for temperature and relative humidity (combined probe with cable) and one for temperature only (internal sensor). The logging function is extremely versatile; logging can be started and stopped manually, by means of the front buttons, or the start and stop date and time of acqusition can be programmed. The delayed start capability allows starting the logging with a configurable delay time after pressing the button for the manual start. For each quantity detected, two configurable alarm thresholds can alert the user if the measure exceeds the configured parameters.