Overview Reviews Product Description 120 V/60 HZ. AIRFLOW SWITCH CHECK OPTION. INCLUDES DUST COVER.Honeywell Process Solutions products are only available in some markets. Please call for more information. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Honeywell Honeywell RM7840M1017/U Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments