OHAUS Guardian 5000 Hotplates Stirrers are designed for safety and simplicity in all research, academic and industrial applications. The design ensures proper mixing and temperature control of the top plate or your sample when using the optional temperature probe. Heating models include a Single Point Calibration feature for multiple setpoints. Backlit LCD Display for temperature and speed, green indicator lights when unit is heating and stirring, prominent hot top indicator light, probe in use icon, Single Point Calibration icon. Probe connection, SmartHousing stays cool to the touch and is chemical resistant, IP21 Ingress Protection, polycarbonate front panel, control knobs, On/Off switch for heater disconnect, built-in support rod holder, easy to clean ceramic or aluminum tops. Hot top indicator light, audible alarm, SafetyHeat protection shuts off the heater in the event of a malfunction, temperature calibration feature for 3 probe and 3 plate setpoints.