Gravity Convection Double Incubator Environmental Chamber: Temperature Control . . . . 0.1 C Microprocessor PID Control Setpoint . . . . . . . . . . .Digital - Touch pad, 0.1 C Range . . . . . . . . . . . . . 5 C above ambient to 50 C Uniformity . . . . . . . . . . . . . . . . . . 0.2 C 37 C Tracking alarm . . User programmable (low) indicator Overtemp . .Tracking, user programmable, action, and indicator Display . . . . . . . . .Digital, LED, 0.1 C increments Temperature Safety Type . . Extreme temperature safety, action, and indicator Sensor . . Thermostat, independent of temperature control system Indicator . . Message center, audible and visual alarms Relative Humidity Control . . . . .Humidity pan - natural vaporization Humidity with pan . . . . . . . . . . .95% RH at 37 C Display . . . . . . . . . . . . .Optional in 1% increments Alarm . . . . . . .Low RH 100L, 3.5 CF ** Please reference item #190820-2856-08 when contacting us about this listing. Return Policy Items are sold as-is as described and pictured. Most items come with a 7 day option to return and a 30 day limited parts warranty. Feel free to call before you buy. 888-649-6497