The alarm thermometer features a waterproof external sensor use outdoors or in liquid. Features user-selectable °F or °C readouts. Great for labs, incubators, refrigerators, water baths, drying chambers and fume hoods. Alarm thermometer/ hygrometer includes the same features as the alarm thermometer but with humidity instead of external temperature.

Ideal for cleanrooms, warehouses, museums, workplaces, environmental cabinets, greenhouses and in ripening rooms. One AAA battery included.