Dual LCD display shows temperature and humidity, with high sampling rate of 2.5 times/sec. REED R6001 Offers This portable thermo-hygrometer measures and displays ambient temperature and humidity simultaneously. The R6001 features Datahold, Min/Max and Relative functions. Features Easy-to-use, intuitive design Dual LCD readout displays temperature and humidity User selectable °F / °C High Sampling Rate of 2.5 times/sec Data hold, Min/Max and Relative functions Low battery indicator and auto shut-off Included Thermo-Hygrometer Carrying Case Battery