Overview Product Description Johnson Controls S351AA-1C Humidity Stage Module DIFF 2 TO 10% RH; OFFSET 2 TO 30%. Product Videos Custom Field Bin Location M-11-3-2 Product Reviews Write a Review Write a Review × Johnson Controls Johnson Controls S351AA-1C Humidity Stage Module DIFF. 2 TO 10% RH; OFFSET 2 TO 30% Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *