Digital data for optimal reptile health At a single glance, a terrarium owner can monitor the two most critical environmental variables in reptile health and comfort. Both temperature and relative humidity are displayed on a large digital readout. A built-in calendar and alarm reminds pet owners to check conditions, make feedings or administer medications. The thermometer keeps track of maximum and minimum temperatures in a range from 23¯F to 122¯F (-5¯C to +50¯C), the hygrometer reads relative humidity from 30% to 90%. A separate probe for each parameter means more accurate positioning; 57in long probe wires suit even the largest terrariums. A set of included suction cups and a built in stand for the processing unit make setup easier.