Overview Reviews Product Description FX80 EXP MOD DUAL RS485Johnson Controls Facility Explorer 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 × Johnson Controls Johnson Controls FX-SC8XD485-0 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments