Overview Reviews Product Description +- 1% Accuracy (at 77°F (25°C)) Compatible with probes with a diameter up to 0.6" (15mm) Reed Instruments Catalog R9980 Datasheet Product Videos Custom Field Product Reviews Write a Review Write a Review × Reed Instruments Humidity Calibration Kit 33% & 75% R9980 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *