Overview Reviews Product Description 120V, 50/60 HZ. 2 SEC POSTPURGE. Controller, Burner, Honeywell Part Number RM7850A1001Honeywell 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 RM7850A1001/U Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments