Overview Other Details Reviews Product Description AUXILIARY RELAY MODULE. RELAY BOARD PROVIDES HIGHER LOAD HANDLING CAPACITY FOR (4) W7900 CHILLER CON Other Details 0.35 Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Honeywell Honeywell Q7900A1004/U Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments